Faith, on the other hand rejects the essentialist righteousness that comes with slayerhood (for a variety of reasons, including an evil watcher). Nevertheless, her conception of right and wrong seem to be a product of her ignoring responsibility in the face of experience.
This brings us to an existentialist framework in which to read BtVS. In "Bad Girls," "Consequences," and "Enemies," concepts such as the totality of death (the end of possible futures, etc), the angst of responsibility, and the absurdity of life compete with the transgressive sexualities hinted at ("'What you forgot your safety word?' 'Safety words are for wusses.'; 'I just don't like rubbing your nose in it. Suddenly wondering where that expression comes from.'). This makes for a potentially confusing cloud of signals. Trust, responsibility, guilt, redemption. And then the fake Angelus.
The fake Angelus becomes the reason Buffy and Angel ultimately call it quits as Angel leaves at the season finale. Even though Angel takes responsibility for his actions and Buffy obviously trusts him (if he'd lose control, he'd really lose control), but seeing the demon that's still in him was too much. And I personally think it is implied that Angel might have slept with Faith, or at least took the "romantic" too far ("As long as you're there, I mostly want you to wriggle."). The interesting thing about all of this is that it appears to be a trust game, Angel's euphemism for BDSM, down to Buffy chained to the wall. So what's really going on with sexuality, violence, and responsibility of this episode? I believe calling this a soap opera for children and saying that the series "disguises" sex might not be quite right (not to pick on a previous post). It seems to me like the sex is on the surface, seething with tension, but that it, in turn, might stand for something else.