I still feel Arion just wants to breed MC's ass not really caring about him past friendship, considering he goes everyday to the forest to fuck the nymphs... Which just hurts.
That is also part of the character, the nymphs mention that the only contact they have in Arion species, is to breed, so he probably never experimented a loving relationship, all of the male NPC arc are kinda still in the work, MC will have the opportunity to have sex with logan, to have a monogamous relationship if that is what you want, but you can't judge a history halfway,
Logan is going through a lot in his life and his personality isn't that great either, is gonna take time.
Rhot is suspicious about everyone because when he wasn't suspicious he almost lost everything he treasured, having sex with him doesn't mean he trust u and he makes that clear
Roushk and Othra, are both fighting against the curse while falling in love, Roushk trying to control himself and Othra trying to be a better leader
Korg is still probably dealing with the effects of being a succubus' prisoner, at least in the mental capacity
Arion never had a loving relationship, he also doesn't know human customs
Bernard is different because that's his deal and that he never gave himself time to focus on his personal life, and never tried to be better because the way things were was good enough for him, his route is about letting yourself fall in love with someone, and helping bareshade [
Sorry about the long rant]