I didn't see Christy paying any sexual attention to one of the new guys. Sure, she talked well with one of them and he might be interested in her, but Christy isn't. Christy pulled out her shirt in her room, the door was closed, one of the guys came in (the one she talked well) without knocking and she screamed to him and covered her boobs. I mean, even a blind would see that she isn't interested in these guys. She didn't even flirt with Ivo on the party yesterday.
What does this mean?
It means, that Christy is realy into her guy (Ivo's friend) and she don't wanna risk to loose him. This guy is a fucking machine, he lasts forever, Christy was extremly satisfied in that one Tver night. Plus he's a guy who talks good with her, he payed attention to her and they had fun together.
Really, why should she risk to loose him? If I were Christy, I would give a shit about these new guys.
But, of course, I could be wrong.