Wishing you a very happy birthday and an even better year ahead.
Who could have warned me just how much I would love you? What a joyful discovery [age] years ago.
It’s time to get the party started because the best boy was born today!
Happy birthday to the sweet child who has grown into an amazing young man.

Happy Birthday, dear son, you are a blessing from God, the prince of my heart.
“From the moment you were born, you have brought nothing but happiness into our lives. Happy birthday to our amazing son!”
“You are the reason our hearts are so full. On your birthday, we want you to know how much you mean to us. Happy birthday, son!”
“Our lives changed forever the day you came into this world. Happy birthday to the most precious gift we have ever received.”
“Son, you are the pride and joy of our family. May your birthday be as special as you are. Happy birthday!”
“May your birthday be filled with the same happiness and love that you bring into our lives every day. Happy birthday, son!”

Dear son, no matter how much you have grown, for us, you are always going to remain our dearest and smartest baby boy. Wishing you a happy bday. May all your dreams and wishes come true!
Happy birthday to the boy with the stinkiest socks!
Have a slice of cake for me… or two… or three—you’re growing anyway!
Happy birthday to my favorite son! Oh wait, you’re my only son!
Happy birthday! Thank goodness you’re not telling any dad jokes yet.
Happy birthday to the boy who only tested my patience a little bit while growing up.
Wishing you a happy birthday full of fun memories—I don’t want to hear about the other shenanigans!