I wanted to write you a funny birthday message, but then I realized that making a woman of your age laugh too much could be a risky move! Happy birthday!
Going to college is a significant part of life but you, my friend, are what has made it unforgettable. I'd be lost without you around to help me get through each day.
I hope you have the most wonderful birthday today.
On your birthday this year, little brother, I propose we make a pact. I won’t reveal your age, so long as you don’t tell anyone that I’m even older than you!
I’m truly blessed that we’re related, but even if we weren’t cousins we’d still be best friends until the end of time. You really do mean the world to me, my dear.