You can wish your male friend a happy birthday by sending him a heartfelt message or greeting, such as:
"Happy birthday, [Friend's Name]! I hope your day is filled with joy, laughter, and all the things that make you happy. Cheers to another year of amazing memories and adventures together. Have a fantastic day!"
You can also personalize the message by adding inside jokes, memories, or specific compliments that are unique to your friendship. Additionally, consider sending a birthday card, gift, or organizing a celebration to make the day even more special for your friend.