I feel like Danica only liked Cam because that's what we expect. We as readers expect our heroine to match up with the hot good boy who's just looking out for her best interests even as he makes all kinds of not-quite-believable excuses for his shady behavior. Jack on the other hand, just because Cam says he's all wrong for her, is cut out of Danica's life, with only minimal protests from the girl in question. 
 I'm not a fan of this situation, here. 
 I'll have to wait till I get my hands on the sequel to really decide.