pls help find this rofan

basically what I can remember is that the fl is suicidal, she has white/silver hair. the ml is between 2 characters, first one was a knight with long hair if I remember it correctly ,, and the other guy was a servant at first and then finds out later on that he had magical prowess and studies to become a mage,, I specifically have a memory of this one scene where he went to the fl's bedroom or maybe the fl went to his bedroom I don't really remember that part correct, but he promised to study magic or sumthin... sorry it's been a while I can't fully remember it anymore pls help, thank you (´；ω；｀)