Sorry I don't think he is an a-hole because he at least managed to fix the problem with his step-father, which is what had caused him to sink towards the sex industry. And he had thoughts of himself as 'filthy' even tho the manga doesn't tell us how he feels about it, it is a obvious feeling to pick up on. He also did finally accept the feel of love, even when he thought he shouldn't be loved. It was guilt and all sorts of feelings that made him hesitate to rely on the seme more. I.........
MC is an asshole.