Need advice

Ever dated someone who is still damanged from there past? Accuses you of everything. Like if I clean in the morning he thinks I’ve did something before I went to work. If I go through the back door, I went to someone’s house. If I changed my Facebook profile it’s because a guy on Facebook that I like has changed his, if I’m smiling that means I did something . If I laugh that means I’ve did something behind his back and feel like I got away with it. If we are texting , & then I fall asleep I was otp with someone. Like constantly constantly. My Facebook password got changed out the blue honestly don’t know how it happened , I told him I would just delete it.. thinks I’m up to something sneaky. I want to look cute at work , oh I’m going to see someone ( work at a homeless shelter btw ). If I’m sad or say how I feel about our relationship I’m trying to start an argument or someone else( guy ) has made me mad now I’m taking it out on him. Like this is Starting to really push me away. I keep reassuring him , I love him and he’s the only guy I want. What would you do? I told him this morning I feel like he’s seeing someone else because he hasn’t been the same with me . ( like holding me like he use to , sex haven’t been for a week and usualy it’s every 2 days , ) just feels like he’s changing or giving up or something when I should be the one. & instead of him saying sorry you feel this way, he made it about him.... and turned everything on me. I’m kinda feeling lost now , & just like I have no one. He thinks I’m using him he has been saying which is like how can you say that? USING YOU? HOW? When he was down bad , I paid rent & im always helping if he needs me. I don’t run off. He. Recently vented to his mom , and saying how he feels like he’s helping someone ( me) & only thing I want is his place I guess . He felt like that at the moment .. ( not everyday ) so she gonna say, I’m see your opening your eyes .. since then he’s been on , “ your using me “ ... which is fucked up as well because , he’s never really gave me money..... I’ve probably gave him more shit in this relationship then he has done for me. I’m confused and lost .