Chryiss
Well, since I decided to dabble in high school romance I'm a little more aware of the tropes associated with that genre.
To be honest I'm pretty clueless about what goes for for the stories aimed at an adult female readership.
Anyway, the main difference between Japanese (manga) romance and its western counterpart is that there's basically no western market for shounen/seinen romance (or whatever such stories would have been labelled as if such an English reading market existed), I haven't encountered once since the Can't buy me love movie from the late eighties.
Let's assume, for a moment, that it did. With a male audience your male MC will act as the reader proxy. So you have an 'average' MC with or without a harem. Slapping your love interests around ceased being cool since James Bond did that during the sixties and early seventies. Raping them wasn't cool even then.
Why it's supposedly ok in shoujo/josei (and their western or Chinese counterparts) is beyond me, but it's definitely not specific for this site. The entire Bad Boy subgenre takes flight from this setup, no matter if said Bad Boy actually acts abusively or not in the story. Add that every "let's have a bet about turning the female geek into a prom queen" -story basically depicts a first class jerk as a love interest. Yeah, yeah, he changes his mind, regrets everything and buys a new personality at Walmart and ends up perfectly lovable a few weeks later...