I need advice

This isn’t something I try to rant about or get off my chest. I’ve only mentioned it on here once. But here I go. Me and this guy started talking about 8-9 months ago. We hung out occasionally but never as more than friends until one night we fucked. Instantly I was drawn to him so I started seeing him more. He had his own house so I’d go over there often as well. We would always have deep conversations and he’d always talk about a girl calling her his ex. To not say her name I’ll call her Mary. I didn’t mind because I knew this was an open situation and I wanted to know about him. One night he slipped up calling her his “girlfriend” and when I asked about it he goes “aw nah sorry I ain’t mean to say that” later he admits he has a girlfriend but they’re off and on and when he’s with me they’re broken up. I really didn’t like the sound of that so naturally I stopped talking to him as much. But one thing led to another and I was right back with him in his house. He got in a car accident and called me telling me he needed me. I showed up and took care of him.. she was calling him the whole time but I couldn’t just leave him. So we talk and when I leave I hear him answer “hey baby nah sorry I was sleep”. That broke my heart. A week later he hits me up again. On and off like usual. Then he started asking for advice when he needed it, about their relationship and the way she makes him feel about himself, his body. I told him to stop coming to me and focus on her to which he tried but later failed. They end up breaking up and he’s with me every day. 3 weeks later she gets him arrested. False claims. My heart sunk when I saw him carried out In handcuffs. I had not met his family so there wasn’t much I could do. I went to his house to take care of the turtle I had given him as a gift. His grandmother showed up I rushed to the door thinking he got bail. It wasn’t him. I let her in and we talked then he was later sent to jail. No bail. It’s been 3 months he’s got moved 4 divisions. Hell ask for my advice and I’ll tell him and he won’t listen. The last time he got moved he was in a good division, no gangs they got music personal showers etc. He asked if he should get a tattoo to which I warned him not to or he’ll get kicked out or put in the hole. He did it anyway. They found out and he tried to lie but was caught and his grandmother blamed me. Telling me it was me who should have told him not to (which I did) and I should have told her he was moved and things like that. He told me he would call them and didn’t so I didn’t tell them till late. I told her I tried to tell him but I can’t control him. Thats not the first time she’s got mad at me either. She’s cussed me out multiple times which is only making it worse for him and I. Either way I don’t know what I should do about him. He never listens and i don’t know how long I got to wait for him already. I can’t think of anyone else or even look at another man the same way but he just doesn’t get it. It’s like he WANTS TO BE IN THERE. He is making NO effort to stay out of trouble and his family is making me feel bad because I can’t be in there with him. I already have a lot going on and I’m spending more than half my check A WEEK to put money in his account so he stays fed and things like that. But it feels like I’m doing it for nothing. It’s like he doesn’t care. He’s never put in effort for me but when he calls he seems so sure. “I’m going to be there for you. Treat you better than anyone else can. When I get out I’m gon show you a real man. I should have before man this shit trips me out” I know what he can be I see so much potential which is why I’m with him even after all this but it just seems like I’m putting more effort into this then he is. Seems like he doesn’t want to come out and digs his hole deeper. I don’t know what to do