He treats me badly and still talks to his ex—can this relationship be fixed?

I posted a video of my boyfriend and my daughter and he never did put like or love to it (but everyone else DID. ) He had me blocked for a year , because he was talking to his child's mother and wanted her to believe we weren't talking to each other. 2 months ago, she messaged me asking why was I watching her over him. I told her I only saw her once. Then she said how he denied talking to me and showed me screenshots. Said Im dumb for watching her in public.. which it's true. I did follow her and had my friends following her because I wanted to see if her baby looked like him. And SHE DOES. SMH. I told him she was messaging me. He told me to tell her , we wasn't TALKING... Smh. but now he's on my page AGAIN... every time I post him or tag him in something, He never puts like or love to it... every weekend when I want to spend time with him, he's always outside with his friends OR his family.. or at the club. He used to love me, I don't know what happened. 🫤every time I go through his phone, I find out about a different girl or he's arguing with his child's mother... I thought he left her alone but he told her in one message he was outside her old house. She told him she had moved because she's mad that he gave me her address in the past. he buys things for my daughter, but I don't know...🤦most times I'm on my OWN. Im getting evicted soon AND I know for sure I can't stay long at his house. Smh. He didn't help me when I was evicted before 4 times. I had to call my sisters to live with them. I don't know why I love him so much after all he put me through. Is there a way to fix my relationship with him?

He treats me badly and still talks to his ex—can this relationship be fixed?
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