I feel bad for the uke to be called a slut by Inha

I know he's at fault to at that 'alley scene' just to protect Inha but they were having an awkward sex rn. Idk if ML has douche personality or what I'm clueless what he really is tho or the nice guy is just a facade. Idk how the MC will be after this and hoping that misunderstanding clear up. It's frustrating yk