Haha, that's pretty strange. My friend is taking care of a male Nicaraguan that seems to hate everyone but me. The only photo we've managed to take of him is me holding him while he contemplates striking at the camera my friend is holding XD None of the other snakes have a problem with the guy, and this snake hates pretty much everyone. I don't think I'm that much better at reading him than anybody else, so I guess he's just playing favorites.

I think Valentine Pirate's got a good idea, as long as your gf doesn't mind getting chewed on for a while.