You deserve the best that life has to offer. Thanks for being such an amazing friend. Wishing you the greatest of birthdays.

We’ve been through the best of times and worst of times, and I’ll continue to stand by your side no matter what. Happy birthday to my best friend.

Today is a great day because I get to celebrate another year with my best friend. Wishing the most amazing day to my best friend on [his/her] birthday.

Wishing all the best to someone who makes life so much better.

I hope your birthday brings you as much joy and happiness as you have brought to me.

Wishing the happiest of birthdays to my best friend who keeps giving, even when [he/she] knows that I don’t have much to give in return.

Many people come and go in life, but you came into my life and never left. Wishing a very happy birthday to my lifelong best friend.

Happy birthday to someone who helps make my life truly amazing.

It’s truly awesome for me to celebrate an extraordinary person like you. I’m so blessed to have you as a best friend. Happy birthday.