how do you breakup when you live together?


I love my boyfriend to death and we've been living together for a year but I'm finding out slowly that he's narcisitic and mentally abusive. I know he's trying to work on it but I'm just tired of dealing with it and I feel like I've lost myself. I don't know who I am anymore. I need to get out of this relationship but I don't know how to go about it since we live together and stuff...what do you ladies recommend