I need some advice :(

Right so I had been with my partner since feb 2014...august 2018 I fell pregnant. We were both so happy, fast forward to the day I have birth my partner left me in the hospital at 6 in the morning to go home and talk to other women on only fans... this upset me since then and due to other reasons i fell out of love with him. Attempting to leave on several occasions and him always getting his own way and me going back to him! June 2020 I left him completely moved back to my moms house however we had a family holiday in august 2020 so he begged me to come. We was doing well with co parenting, we go on holiday (gave in yet again) once I got home from holiday I got my own place, his family assumed he was coming with and paid out over 2,000£ to move out, however I’m still not happy and don’t want to be with him, what would you guys do? I’m seriously not happy and was so much happier when we were spilt :(