Exactly. It was Arias who was playing the manipulation game to the hilt. Who in the heck breaks up with someone and then moves to where they will be right there with them? Nebbermind, Arias the manipulator does. She knew he was human with human weaknesses and she dangled sex in front of him like a carrot on a string in order to manipulate him in to seeing her once again.
I do agree with Geff that manipulation is a form of domestic abuse and I believe Arias is guilty of doing it a thousand times over. She was determined to use sex as a tool to trap him... like a black widow does in her web and then kills him afterwards.