So, I went through my boyfriend's phone. I just had this gut feeling that he is not telling me something. Anyway, as I was going through his phone I saw him talking to one of our friend. He was basically venting, but he was basically talking shit about me and blaming me for everything that's been wrong w our relationship. He said I make him pick between his sister and me and between his friends and me. I tried talking to him about all these issues before and not once he ever told me that's how he felt. I also told him if he thinks that his sister moving out is because of me and he said no it is not.... but when he was talking to our friend he said his sister moved out because of me and I am bully. Anyway, that makes him a liar and a shit talker ( at least that's how I see it ) so my question is, ladies, how do I go about confronting him without telling him I went through his phone??

p.s. his sister and I didn't get along because she's very disrespectful and she had no respect for our house. I complained to him about how I felt about his sister, but I've never said anything mean to his sister or directly attacked her. He told me his sister is a pathological liar and she didn't like me so that's why she acted that way at the house. When I got back from Arizona after having some time away from our house because of the issues we had about his sister, she immediately moved out. Crazy thing is I talked to her before I came back and she acted like we were okay, but now I'm to blame.