Fitzgerald Centenary Home Page
A nice compilation of Fitzgerald resources.
The Question and Answer section for The Great Gatsby is a great resource to ask questions, find answers, and discuss the novel.
There are two points at which Daisy and Gatsby's relationship could be considered "new". First, it seems that their "new" relationship occurs as Tom has become enlightened about their affair. It seems as if they are happy...
http://www.gradesaver.com/the-great-gatsby/q-and-a/describe-daisy-and-gatsbys-new-relationship-70077/
I don't recall any violence in in chapter 1.