I'd argue the blonde guy is worse, pretending to be the bigger man after she got sexually harassed only to lust after her and persuade her to have sex moments after, telling her he "wanted to fuck her from the moment he saw her". At least black hair is a nasty asshole and he owns it.
Regardless, neither should be rooted for, and in fact I should drop this yesterday. Wattpad ass storyline with the depth of a coupe glass.

Why the fuck are people rooting for the black haired guy, or atleast saying they can change him. Did you forget he's literally a groomer. Taking advantage of a poor woman since she was 18 and proved time and time again that he thinks he can convince her if he throws some cash to her.
Not only that he also forced himself on her when she said she wanted to end things. People will really forget that a man is a perverted rapist pedophile just because he's handsome.
There's something wrong with the author because why does she still end up with that black haire dude. I really hope they change it here in the manhwa