1. "Happy birthday to my favorite cousin—thanks for being the sibling I got to choose (and who never stole my toys… okay, maybe a few). Here’s to another year of inside jokes and chaos. Cheers!"
2. "Another trip around the sun with my partner in family drama (and family fun). You’re more than a cousin—you’re the friend who gets all the weird aunt stories. Happy birthday!"
3. "To my cousin, my childhood co-conspirator, and the one who still laughs at my terrible jokes: happy birthday! Let’s make this year as memorable as that time we tried to bake a cake and burned the cookies."
4. "Happy birthday to the cousin who grew up right alongside me—from treehouse adventures to adulting (sort of). So grateful we’re still this close. Enjoy your day!"
5. "Cousins by blood, friends by choice. So lucky to have you in my life—especially when I need someone to blame for the broken vase at Grandma’s. Happy birthday, troublemaker!"
6. "Another year older, but you’re still the same awesome cousin I’ve always looked up to. Here’s to more birthdays, more reunions, and more of *us*. Have the best day!"
7. "Happy birthday to my cousin—thanks for being the one who gets my references, tolerates my rants, and brings the snacks to every family gathering. You’re a legend."
8. "From shared bedrooms at family vacations to late-night texts about life—you’re the cousin who feels like a best friend. Happy birthday! Let’s keep the good times rolling."
9. "To the cousin who makes every family event 10x better (and 10x louder): happy birthday! May your day be as fun and fabulous as you are."
10. "Happy birthday to my favorite partner in crime—remember when we snuck extra candy at Halloween? Yeah, we’ve come a long way. Here’s to the next chapter!"
11. "Cousins don’t just share genes—they share memories. So glad I get to share so many with you. Happy birthday—here’s to making a million more."
12. "To my cousin: you’re the first friend I ever had, and still one of the best. Thanks for growing up with me, even when I was annoying. Happy birthday!"
13. "Happy birthday to the cousin who’s equal parts hilarious, loyal, and slightly chaotic (in the best way). Enjoy your day—you deserve all the cake and confetti."
14. "Family reunions aren’t the same without you—thanks for being the life of the party (and the one who helps me escape awkward conversations). Happy birthday!"
15. "From childhood pranks to adult milestones—you’ve been there through it all. So grateful for my cousin, my friend, my ride-or-die. Happy birthday!"
16. "Happy birthday to the cousin who knows all my secrets (and still loves me anyway). Here’s to another year of laughter, inside jokes, and maybe a few more secrets."
17. "You’re not just a cousin—you’re the reason family gatherings feel like adventures. Happy birthday! Let’s make this one unforgettable."
18. "To my cousin: growing up with you was the best gift. Here’s to another year of being awesome, together. Happy birthday—go celebrate like you mean it!"
19. "Happy birthday to the cousin who’s always down for a good time, whether it’s a lazy afternoon or a wild night out. You’re the best—enjoy your day!"
20. "Cousins for life, friends forever. So lucky to have you. Happy birthday—may this year be your best one yet!"