A thoughtful collection of happy 15th birthday letters and quotes to inspire and honor the wonderful young man. Gentle advice, words of wisdom, and life lessons abound in this inspiring 15th birthday letter. Choose the one you love below to write as wishes on his 15th birthday card.
Letter to My Son on His 15th Birthday
- Son, you’re getting bigger and stronger every day. , I was just dreaming of finding you at your age, and here you are now, just 15 years old. I wish I could tell you everything in person, but this letter will have to get me by this time.
- You are my best friend and the most amazing son I could ever ask for. You mean more to me than anything else in this world. I love you so much and wish we could hang out every day!
- Happy Birthday to my son! I hope this day will be memorable for you, full of joy and love. Remember that you are a special boy! From mom.
- Dear Cody, you are growing so fast. You were a little boy just yesterday, and today you’re becoming a man. I couldn’t be prouder of the person you are becoming. I love you with all my heart!
- I can’t believe that it has been 15 years since I held you in my arms for the first time. Your mom had to push you out, but I stayed calm even though I wanted to freak out.
- Happy Birthday, a day that is as special as you are. I am so proud of what you have become and all you’ve accomplished so far—wishing my son many happy returns of the day.
- I’m not good at writing letters, but I wanted to tell you how much you mean to me. You are so much like your father, and there’s no one I am prouder to call my son. I love you; keep being great!
- Buddy, you are the best son and friend. I will always support you, encourage you, and love you. You are such a great person with a big heart. You are the greatest gift to my life. Love, Mom, and Grandpa
- This is such a special day for me. I’m so happy and grateful that you are my boy. From the moment your mom and I found out you were coming into our lives, we’ve looked forward to every second with you. You are the apple of my eye and my greatest joy. I love you!
- We are still beginning, but I just can’t stop looking forward to the future. All I want to do is be with you. It took me so long to find someone like you. When I first saw you, I knew we were meant to be. You are the best thing that ever happened to me. Our love is endless; make that count.
- Will you remember your 15th Birthday? It’s three years in the future. Will you remain as my loving son? I sincerely wish that you will look back on your 15th Birthday as a significant turning point in your life in this letter.
- Dear Sam, Where do I even begin? First of all, Happy Birthday! It’s so hard to believe you are now 15. You have changed my life in more ways than I can explain. From the moment I saw your face, I knew we were meant to be together. I thank God every day for sending you into my life.
- Dear son, your smile lights up my world. I couldn’t be happier knowing I have a son as kind and caring as you. You bring me so much joy and kindness that it is hard to imagine life without you.
- Hey Son! I wanted to let you know how proud I am of you and your accomplishments. You are an extraordinary young man who will do amazing things in the future. I wish you the very best in all that you do, forever.
- Hey buddy, how are you doing? I just wanted to tell you that I love you very much and that your birth meant the world to me. You’re such a fantastic person, and I am lucky to be my son. You’re awesome!
- I have watched you grow these last 15 years, and I have watched you become the best man, son, and brother, a father, could ask for. I am proud of you and the man that you have become. I love you more every day, and I look forward to watching you continue to grow into the person that you will become.
- I am so proud of you as I watch you grow into a young man. You and your brother have brought so much joy to me! I am grateful that you are always there for me, no matter what. I love you more than you will ever know!
- Son, I may not have given birth to you, but I’ve loved you like my own since the day your father brought you home. There isn’t a day that goes by where I don’t thank God for bringing you into this world.
- You are my best friend and the love of my life. I hope you have a happy 15th birthday, sweetheart. I am missing you tons!
- I am proud of you. Here’s to 15 more amazing years. I know you will be terrific as you explore all the possibilities out there for building your future. I love you with all my heart, and that will never change.
- My son, right now, your mind is racing with all the thoughts of who you want to be when you grow up. I remember those days just as well as anyone; it’s an exciting yet overwhelming time. You have made me so proud to have you as my son. I love you and look forward to seeing all that life has in store for you!
- You are so loved and cared for. You mean the world to me. I have no words to explain how much you mean to me. You bring a smile to my face every day. I pray every day that you will always be happy. I’m glad to have you as my son; enjoy your day, sweetheart!
- Son, you have proven that you are responsible and mature enough to have an Xbox. For this reason, I’m happy to receive it for you as a birthday present. I hope you enjoy playing all your favorite games on your new console.
- I am so proud of the man you have become. You have grown up into a respectful young man with a kind heart. Even though it may not always seem like it, I love you very much!
- I am looking forward to sharing your adventures and watching you achieve your dreams. Happy Birthday!
- Don’t do anything I wouldn’t do because I want you to succeed. In the end, it’s not the years in your life that count, and it’s the life in your years.
- Dear son, today we celebrate your 15th Birthday! I am proud to see you grow and mature. You are still an adorable and kind kid with a pure heart of gold. I will always love you and support you in whatever you do. I hope tomorrow brings great things for you. I hope you have the best Birthday ever!
- Your big day is upon us. I can’t believe that you are 15 years old, but I will say that you look great! I can’t wait to see all the beautiful things you will do in life. You may have a million questions, but I want you to know that no matter what, we will always be here for you. Happy Birthday!
- What can I say to a boy who has turned out to be everything I’ve ever wanted? You have made me so proud these past few years. You grew up with so much drive and determination, and you have always been my little bright spot. I just want you to enjoy your childhood as much as possible!
- You can never, ever know how much I love you. You mean the world to your brother and me. Always remember, you are a KING. Work hard and do your best in life. I hope that you have a happy, healthy, and successful life. I’ll be proud of you no matter what; always remember that!
- Dear Tim, I can’t believe how fast time is passing by. You are already fifteen years old – a teenager! It is so hard to match your age, and in reality, you were already a grown-up person in your childhood.
- Thank you for making my life so fantastic. You have given me so much joy and happiness throughout the years with your antics, outgoing personality, and contagious laugh. I love you and hope you have a great year filled with many good things!
- I not only had you but I also was blessed with a son. He reminds me of my older brother and father, and I always wished they were here to guide me through life.
- You have made mom and dad so proud; we love you so much. We are happy to have you in our lives and hope you stay this amazing for a long time! Happy sweet 15!!
- Fifteen years ago today, I held this little guy you have become for the first time. I still remember your scent and how cute you were with the bit of tooth poking out of your mouth. Being a father has been one of the most challenging, wonderful, and unique things in my life. I love you!
A Letter to My 15 Year Old Son on His Birthday
- I’m so proud of you and everything you have done. I love you so much! Happy Birthday, my boy; I hope your day was everything you wanted it to be. Love Mom
- I just want you to know that I love you so much, my sweetheart. And I’ll always be here for you… always. Have a happy 15th birthday, honey buggy!
- Dear Simon, I’m writing this letter to you for two reasons. The first is to remind you how much I love you and how much you mean to me. And the second is because I don’t get enough chances to tell you these things.
- Happy Birthday, Son! I love you, and I miss you so much. Your brothers miss you too. We wish we could spend your Birthday with you, but we can’t afford the plane ride right now. I hope that we will see each other again one day. We will always love you and be proud of the man you have become.
- Happy Birthday, son. I hope you like the gift I got you. I know it’s not much, but it’s from the heart. They say that I was like a father when you grew up, and I will always be there. I want you always to know that, no matter what happens, you’re never alone.
- Happy Birthday! I hope you have a fantastic day filled with plenty of family and friends. I am so proud of the young man you are becoming; you smile at me every day. I love you and enjoy your Birthday.
- You are the most fantastic person I know. You have been through so much and have held firm while so many others would have fallen. Many people don’t realize it, but you are one of the strongest people I know.
- Happy Birthday! I hope you have a great day and enjoy this particular time in your life. I love you so much, and I wish all the best for you today and always. Make sure to tell your mom that I love her, too.
- Hey champ, A friend reminded me today to pick up some photo paper and get those photos I took of you made into a calendar. I think that’s such a good idea! I love the pic that has the baseball bat – so cool. Anyway, I hope you had a good day!!
- Happy Birthday! I am so proud to be your parent. You are a caring and thoughtful young man. I love you with all my heart, and I just want to say that if you need anything, I’m here for you. I love you so much, son.
- Kiddo, you mean the world to me; always remember that! I hope you always know that you are an extraordinary young man to me. I hope you enjoy your day. Love Mom
- Happy Birthday! I hope you have a fantastic day and enjoy the present I got you. Remember, love always, mom.
- Happy 15th Birthday. I know that’s hard to believe because you still look so young, but it’s the truth. Fifteen years seems like a lifetime, and I still remember it like yesterday… when we met you, when your sister came into our lives, and how your first two months of life were spent in our bedroom. We were inseparable!
- I hope you have a wonderful birthday, my son. I love you so much, and I hope that one day you grow up to be just like your daddy (me) — handsome, athletic, and charming. I’m so glad to call you my son. Happy Birthday!
- You are an amazing son, brother, friend, and person. We love you. You make us all so happy. You are a great little brother to your sister and me. I am so proud to call you my son and I will be with you on your Birthday, so you have no worries about that.
- Happy Birthday, son! I love you so much. I am so proud of you; my little boy turned into a handsome young man. You are the best son any mother could ask for. I just want to say thank you for being such a good person and always making me smile. Have a fantastic day!
- Today is a special day. It’s your Birthday!! Happy Birthday my son! I’m so excited to have you as my son, and I love you so much. You make me smile every single day!
- Hey buddy, I want you to know that you’re my best friend, and I love you more than anything in the world. Thanks for all the good times we’ve had together. This past year has been a blast, thanks to your adventurous spirit. Love you!!
- I love you so much! You’re the most caring and courageous young man I know. Nothing can stop you when you set your mind to something. I wish you the best in life. Love, mom
- To my wonderful son: Happy Birthday to you. You are growing into a fine young man, and I am very proud of you! Your sweet mother and I have enjoyed representing you since you were born. As you get older, keep striving to live your life with kindness and compassion toward others. We love you very much!
- My precious son, I love you so much. You are the very best thing that has happened to me in life. I am so proud of the boy you are becoming.
- Happy Birthday to my son, my friend, the most precious person I love so much in my life. I hope that you have a fantastic year. I love you for who you are and can’t wait to learn more about the man you are becoming.
- Dear David, You are a blessing to our family, and we all love you so much. You are kind, funny, and loving. I am so proud of the young man you have become! I can’t wait to see what amazing things come into your life in the next year. We are here for you, and there is nothing we wouldn’t do for your happiness!
- Dear Kent, Happy Birthday! I love you with all my heart and soul. Life is not always an easy road, but I am so grateful I was blessed with you through it all. You are a great kid, and I am happy to be your mom! Enjoy your special day. Love, Mom
- Dear Son, I love you and am so proud of you! You have grown into a wonderful young man, and I think we can still do a better job communicating with each other. You are right sometimes too, but I try not to point that out to you.
- Happy Birthday! I just can’t believe you are 15 already. The last 15 years have been the best of my life. You are so mature and wise beyond your young years. I am so proud of you and the man you are becoming.
- I look forward to what lies ahead and the future that awaits you!
- Dear son, You are growing into a young man so fast! I am so proud of you for the person that you have become. You continue to impress me with your hard work and dedication to your goals. I love you so much, and I couldn’t be more proud of the amazing young man you have become.
- Dear Bill, I love you as you are, but I wish you had worked on your math skills. How did you get to be so bright in some areas but clueless in others? You have a gift for the arts. You got the gift of dance from me, and you play the guitar like a pro, but I think you need to stop thinking about girls for a few hours and study your algebra.
- Dude, you are growing up so fast. It seems like just a few months ago, you were my baby boy, and now you are growing into quite the young man. I am so proud of the young man emerging before my eyes. You are in almost every other way but still hold that special place in my dad’s heart. I love you, son, always!
- You are my gift from heaven. My heart has never felt so overwhelmed with love as it does when I look at you. Thank you for making my life better in every way. You make this world a brighter place… You are the most amazing son in the whole world.
- Thanks for always being such a loving and caring son. You will never know how much joy you bring me, and I love you with all of my heart.
- You are so much like me. You’re the funniest person I know, you always make me laugh, and when you smile, I can’t help but smile too. I love our memories together; they help ease the pain of losing your dad. I’m so proud of who you are becoming and know that if your dad were still here, he would be just as proud…
- My dearest son! Your 15th Birthday is a special day in your life. You are almost an adult now, but I will always be here to help you. I love you very much!
- I have so many things I want to tell you. So many memories I want to take with you. A million places I want to take you. Most importantly, a million times, I want to tell you how much you mean to me. Happy Birthday (I love you)
- Thank you for always making me feel like I am your number 1 girl! You give me a reason to be excited about being a mom. Today is your day, but every day with you is my favorite day of the week! I’m so happy to be your mom and will love and support you forever.
