1. Happy 18th birthday! Welcome to the world of adults. It’s a crazy world, full of sinners and saints. You’ll fit right in.
2. Thank you for being the sweetest friend I know! You are truly awesome. Welcome to adulthood, happy 18th birthday to you!
3. My child is grown up and celebrating his 18th birthday today. Stay true to yourself son and follow your heart in everything that you do.
4. Turning 18 will transition you into a crazy world filled with many surprises and obstacles. Enjoy adulthood and remember your parents will always be there for you.
5. You have waited eighteen long years for this day. Smile, jump, laugh and cry – enjoy the wonderful years that lie ahead and never look back. Happy 18th birthday to my friend.
6. Good friends are hard to come by. Lifetime friends are even harder to find. Happy 18th birthday to someone whose friendship I will treasure forever.
7. I can never imagine growing up with a better friend. You are one of the few people who know just what to say to bring my spirits up. So here’s wishing you a beautiful 18th birthday!
8. 18 is one of the best ages. You get to do adult things while still acting like a kid, have fun!
9. Happy birthday to the best friend a girl could ever ask for. Thanks for listening to me when I need an ear, or making me smile when I am down. May you have all your wishes come true today.
10. I couldn’t imagine growing up with a better friend; you know just what to say to bring my spirits up. Good times or bad, you’re always there. Wishing you a beautiful day and happy eighteenth!
11. At 18, when it’s okay to think more about yourself, you think only of others. You are already an old soul. You’re definitely ready to be an adult. Happy birthday!
12. Happy 18th birthday to a wonderful, beautiful and smart friend. You will surely do great in this crazy world of adults!