Any advice please

Hi I just turned 17 I have a 5 month old girl. I had to finish with her father because he was controlling hitting me & raped me anally when I was pregnant with her I was to scared to leave him my mum found the messages on my phone about it. Anyhow I am now in a new relationship it's totally different but I still can't stop asking my bf if I can do things my mum has explained to my new bf what has happened as I can't talk about it I like to pretend it didn't happen... My bf is really really good with my little girl but her father doesn't want anything to do with her my mum has tried heaps of times to arrange contact he always lets her down he refuses to pay for her as well it's would have been done though my my mum do you's my girl would be better without him or to have contact I just don't know what to do 😢