No Chemistry Between Kyle Gallner (Quentin) & Rooney Mara (Nancy)

One of the things I hated about this movie, is the majority of it spent with Kyle Gallner's Quentin and Rooney Mara's Nancy.

I just couldn't buy these two together in a relationship or even Nancy being remotely attracted to Quentin in the least.

Kyle's Quentin came over as the sort of geeky type of guy, that would be chasing that girl he would never get.

Rooney's Nancy came over as that sort of girl that would be in a relationship already...

I know it's just a movie, but I find chemistry very important between two actors and I felt completely a miscasting between the two.