Here are some quotes for your cousin's birthday:

- "Happy birthday dear cousin. I want you to always bear in mind that I’ll be there for you whenever you need me."
- "Cousins are actually precious. A big smile would make your face shine. May you always be happy and blessed."
- "Happy birthday, champion. You have always been my companion. You are more than a cousin, you are my best friend."
- "Wish you a happy birthday, cousin. You are a star in the sky. May you always shine bright and spread your light."
- "Cousin, it’s your birthday. Celebrate it with joy and gratitude. You are a wonderful person and I am proud to be your cousin."

I hope these quotes help you in wishing your cousin a happy birthday! Let me know if there is anything else I can help you with.