at seasons four they were proves that Cameron still have feelings for House, like in Ugly, when Cameron sagte on the nationnal TV that she loves dr House, and in an other episode, Cameron made House to edmite that he mises her.
in no Mehr Mr nice guy, chase asked Cameron if she slept with him, and she didn't say no...
maybe she didn't , oder she did, but that means that chase thinks that Cameron still have feelings for House.
so these moments means that Hameron is not over, maybe in season five, we'll have Mehr evidense then that, but who knows...