I didn't watch the whole episode yet, but... if she didn't say she was raped to him, how is he supposed to know? If she does till the end of episode then yes, but if she doesn't say it, some of these comments are bit off.
I doubt his expression will change drastically in this one.
well... it's true he doesn't do very good in romcoms, let's be honest, but I think this role will suit him and his acting looks very good in the teaser... there is difference between hate and truth/fair opinion