As such, the forceful kiss works, for me (even though the immediate context is admittedly a little weak). It's sexy, which is what it wants to be, but it also has...precedent, let's call it. There's some progression, of a sort, that would lead the two characters to find themselves there: an unexpected come-on, a lingering vulnerability, an exploited interest. It's just that the bit that gives the kiss some context is immediately cranked up to 11--and it did not need to be.
The friend is being aggressive, born of desperation at losing her chance to "have" the protagonist. It's not right, certainly--but it also shouldn't be wrong, here. It should fall into a sort of gray area--that is, it should be portrayed as a complex (and, yes, exploitatively erotic) relationship, instigated by a confusion (I assume) of love and lust. Emotions are weird; expressing emotions can be a dirty business. That's fine. Sincerity excuses a lot, in a story.
Which is why that bathroom scene is so awful. It entirely undercuts the excuse for the all the sexytime stuff--which is what this show is built on.
