Having an empath demon for a boyfriend is that well, empathic!
So he finds out that these people need his blood to perform a spell, and yeah, that's *all* his blood, but because he picks up on what other people feel and want he's like OK with that. They really want this and it will help them, so I'll give it to them. No thought for personal safety because he doesn't in a lot of ways have his own personality. He's a kind of amalgam of whoever he's around.
So, he's in with a potentially evil group at school because he rooms with it's leader. You can't live with someone and not pick up on what they feel, and it's like a zillion times worse if you're an actual empath demon.
Plus there's this whole thing where he's feeling what everyone else is feeling but before they know they're feeling it and before they have worked out what it means.
This means that he can see to a degree what's going to happen next relationship-wise and gets jealous of something that *has never happened*. This is not just annoying, it's confusing as all Hell.
Still, you gotta love the guy. Especially since he chose me over the crazed witches and now I'm super-cool with the Slayer powers he's a bit worried that he's not cool enough for me.
..............This has been a Joanna rant, based on Hix's Buffy game "sunset".