1) Happy birthday, brother-in-law! I wish you a wonderful, enjoyable day and an even better year to come!
2) Dear brother-in-law, you mean the world to my sister, and my sister means the world to me. That’s what makes us family! Happy birthday!
3) Wishing you a very happy birthday and many prosperous years to come, my dear brother-in-law!
4) Thank you, brother-in-law, for being such a generous and kind brother to my husband — who wouldn’t have become the wonderful man he is today without you! Have a very happy birthday!
5) Happy birthday to the best brother-in-law any man could wish for! Thanks to you, I always look forward to family events! You’re a great friend and I hope you have a wonderful birthday! Wishing you all the very best for the coming year — prosperity, health, and happiness!
6) After so many years, we can drop the “in-law”, right? Wishing you the very best on your birthday, and on all the days that follow, dear brother!
7) I never had the luck of having a brother, until you came into my life! On the anniversary of your birth, I wish you many blessings and all the happiness you deserve!
8) A happy birthday to my wonderful brother-in-law, whose sense of humor always brightens any gathering! Your parties are the best!
9) My sister may be silly and naive, but she chose the best husband when she picked you! A very happy birthday!
10) Happy birthday to my favorite brother-in-law! I didn’t pick you, but if I may say so, I couldn’t have made a better choice myself.
11) Thanks for always being there for us! I hope you achieve all you set out to this coming year! Happy birthday!
12) I thought I was only getting a brother-in-law, but in you I also found a true friend. So, I am wishing my friend and brother-in-law a fun day today, and many happy returns!
13) Thank you for worshiping the ground my sister walks on, brother-in-law, I know she makes it hard sometimes. Hope you have an amazing day today!
14) Best wishes to my brother-in-law and true friend. I’m so happy to have you in the family and hope only great things will come your way this year.