Oh for fuck's sake, really? That would be stupid af because his love for the MC was totally unnecessary by itself + completely, like, random. They were friends, maybe not even that. But now suddenly he's gonna be some yandere sore-loser (I'm assuming)??? Lame.
Do you know how long this story will run or how many chapters it currently has?
I don't know how long nor how many chapters this webtoon has. I just know, through spoilers, Perrat is going to turn evil after the rejection. His feelings for MC was really out of character and felt force just for the sake of unnecessary, cheap drama. Perrat turning evil when he's been so steadfastly loyal feels the same. Perrat the good character we like is going to get a character assassination because the author apparently doesn't know how to create conflict otherwise. Just be prepare for it.

Just a heads up, the actual author's gonna turn Perrat into a shitty character in future episodes. Yall should probably start mourning the good man Perrat you know and love. :(