My signficiant other owns a home with his ex girlfriend. Both of their names are on the mortgage and the title. He wants me to move in to the house that he currently owns with her as she hasnt lived there for over a year. I am hesistant to do this as not sure as to what her rights are to the house, and my rights or lack there of if I move in there. Just need some clarification before i make any decisions and approach this subject.