Such absolute borderline trash ;-)
The mental gymnastics this lobotomised MC goes through rather than seeing that FMC likes him. I know she talks trash about him, but the fact that he has seen and touched every quare inch on her flesh should give him a little bit of a clue.
I have a theory that all these manga and animes that show timid beta simping MCs not having a clue is Japan getting revenge on the west for their economy being rubbish. You may only be working 40 hours a week and can have a house and children, but you also now have blue ballz!!!!