What? Did you not read? He had feelings for the pale mf. Not the rapist. When doing the spell or w.e you only suppose to feel extreme hate towards the person you want dead, not to another person that you are fond of. So it reflected back to him since is only feelings isnt hate but he also have feelings of love towards another. So instead of all hate he had both feelings of hate and yet love. Hate towards the rapist but love towards the pale guy.
no, you got it wrong. he cant have any feeling other than hatred towards the person he wants to kill. this curse only works between himself and the person he wanna kill. that pale guys didn't have any relation to this. if not, he will be dead long ago because he have liked the pale guys since much earlier episodes.
he must have feel some feelings when the guy (technically rape) him , he got his feelings mixed up, he didn't feel hatred alone anymore towards that guy (myb he feel longing or something) so thats why the curse eat him back in the end.
So he hated him, wanted him dead, and then they fuck (more like rape) and suddenly he isn't feeling only hate?! ONLY FOR AN ANTAGONIST TO BE BORN