Help...

So I'm currently with a guy. We've been together a little over a year. Social services have recently removed my children due to the fact someone made a false report saying I neglect them so going through assessments to prove I'm a good mother. Anyway I'm staying at my partners until I get them back but he keeps making it clear his family don't like me and don't want me here. Keeps telling me if I let my kids dad get contact he's not going through with assessments. My kids dad was mentally abusive towards me so I am fighting that but it isn't my choice to make. He's constantly on his phone texting other girls. I found some messages the other week to a girl saying he loved her n missed her n wanted to sleep with her. Then kept telling her his dick was out. His excuse was its his other personality. He's schizophrenic. I'm just stuck on what to do😭😭

Edit1;; just to say he is actually schizophrenic. And also they were worried my children were neglected which they are definitely not. They were funny with me I Have 3 children from 3 to 7months and I am 22yrs old.

Edit 2;; they found no evidence apart from my son had dirty toenails and had a scratch on his head from the cat. They seen this as neglect 🤷‍♀️

Edit3;; it was me and my children what had our own house, it was near their dad's family who constantly give me abuse and threats so I refused to leave the house. And it's my current partner I found the messages on his phone but my ex who was mentally abusive.