The possibility of Jess and Nick hooking up has been floating out there since the first episode, but not explicitly addressed until tonight's episode. Them getting together could lead to lots of easy plots for the writers, but it would also mean submitting to an obvious sitcom trope. Nothing happens in the episode and we don't know how often the writers will press the issue, so I'm in wait and see mode.
The episode title, "Cece Crashes," really hits the point. Cece crashes into the show, disrupting everything about it. She's nice to look at, but is otherwise a big, annoying nuisance without any positive qualities. We can accept Jess's quirkier traits because we know she means well. With Cece, she's kind of just doing whatever she wants.