An Admirer - Jewel Bonds, #1

Kaeck is a poor, shy, mage, barely able to afford attending the famous Valker Royal University of Magic and Combat. His life is work and school, leaving him too busy to have fun, or even make a single friend. When he goes to check his mail one day, however, he finds a letter from a secret admirer. Though he can't help but think it's too good to be true, he clings to the idea that someone sees him as far more than the quiet, shy student who never stops working.
Then a chance meeting with one of the most beloved and popular students in the school builds into a friendship, and soon Kaeck finds himself caught between a man he doesn't know, and a man clearly in love with someone else.