Advice?

Good morning,

I’d like to start off as saying I was in a relationship for 3 years. All relationships have their ups and downs as we know. In the relationship I was the one who worked my butt off. 2-3 jobs at a time. But at the time my boyfriend had no job. Maybe one or two but looked for reasons to quit. I’ve always said If you plan on quitting have a back up. I let go of the third job I had. Then the second one. I could accomplish a lot with the 2-3 jobs. But not much someone can take before they get exhausted. He would always get upset when I had to work. Or if I picked up something. I’ve always said if you would work I wouldn’t have to do all this. So we lived together a year with me paying for everything. We broke up the beginning of November. I told him I can no longer keep doing this. Feel like I was basically taken care of him. I had it so the apartment would be left to him and his father who don’t live there has his name as applicant and my ex a co. So it’s based off his dads income. I told him it hurts me to leave. But I can’t keep up with doing all this because in the long run I’ll have absolutely nothing. My things would get ruined when he got mad and all of that. He would take it out on my items. So I’m back at my parents. Helping them by giving them rent to stay here. They told me I didn’t have to but I’m not the type of person who will sit here and live free knowing everyone needs a little help. I missed him so much since I’ve been here. I told him if he gets things together in the future maybe things could change and start over. I cried and cried and cried. So long story short my best friend is on a dating site. She texted me saying that my ex was on there. I said there’s no way. Because he told me he loves me so much and don’t want any other female at all and not going to talk to any. Told me I was the right one for him and he admitted to him screwing up. She sent me the screen shot of him on a dating site. My heart dropped. I confronted him about it by not saying how I found out. You know what his excuse was? He said he did that to see if I was on there. Which is a lie. Because if that’s the case he wouldn’t have used his real pix, real info to spy. That hurt me so bad. I’ve done everything for him. I use to sit there and Kinda believe what he was saying. Since I couldn’t really find out anything on the dating app since I’m not on there I totally forgot about one way I can see if this guy is really serious about me since we been together 3 years. I wanted to see if he is being honest, using me, or anything. Remind you we broke up in November. I went digging. Everything that has ever happen bad I’m the type to apologize even if I didn’t do a damn thing. Telling me he’s lonely and has no one to talk to. Him and I share the same phone plan. I pay for it $200 month for both phones. I went digging like I said and there was a number repeatedly I couldn’t count how many times but it was a lot! I went detective and spokeo the number. It’s a female that lives in the next complex over. I confronted him about it. He said oh no I’m working on her car etc. I’m sitting here thinking okay that’s understandable. I kept looking! Texts 12am 1am 2am 6am! I told him no damn Way that’s about a car. He came out and told me that he was just talking to her about life etc! I’m ticked cause me being kind to buy him a phone last year and doing this to me! What do I do?!!