I never thought I would need more siblings, but since meeting you I’ve learnt that our family would be incomplete without you. Have a happy birthday, dear brother-in-law!
My most special birthday wishes are reserved for you today, my friend! I hope you have an incredible day full of wonderful celebrations! Happy birthday!
Whenever we are together, big brother, I still feel the urge to follow you around, hoping to experience great adventures. Have an awesome birthday, big bro!