Happy birthday to you, my dearest sister from another!
I am so thankful to your mother and father for giving me the greatest gift in the world: you! You are a one-of-a-kind friend and one I am so lucky to have in my life.
On your special day this year, I want you to know that to me, you are so dear. I couldn’t wish for a more meaningful or better best friend than you, girl.
Birthday gifts are overrated I think, sis, so starting from now I think we should just exchange sweet birthday wishes instead! Happy birthday, my dear!