In "Power Play" he has sex with Nina yet he doesn't turn to Angeleus. But Buffy and him have sex and he turns
wtf that's so unfair to Buffy imo
Well, Buffy and Angel could have, you know, at least tried to actually find a way to remove the loophole from his curse. Or Angel could have visited that cave demon and gotten a patched version of his soul.
Angel and Wesley talk about this in "Smile Time", about how it's because he will never have perfect happiness with anyone but Buffy. Yes it is unfair but it's a testament to their love and I think it's beautiful if tragic.
Don't forget Cordy. Shagging her also worked fine as a soul-loss trigger in that dream-simulation that shaman provided in "Awakening".Exactly, Angel needed a perfect moment of happiness and he could only get that with Buffy