He wants me to move in with him...

I'm currently pregnant. I'm not sure if it's my best friends baby or my soon to be ex husband's. My ex husband abused me a lot and he got mad that I wouldn't do the dishes. I had serious period cramps and wanted to lay down. So he hit me and forced me to have sex with him against my will... two weeks later he left me for another women he had been cheating on me with. I went to my best friend who had been there for me through so much. He had fought my husband for hitting me in front of him once. We watched TV together and drank a little and we ended up having sex. I later found out I'm pregnant. My doctor had told me it is possible to get pregnant on your period and since my husband raped me on my period I'm not really sure who the father is... When I told my best friend he said he wanted to be there even if the baby isn't his and that he loves me. I honestly had a feeling in the past he may have liked me. We are not in a relationship because I need to really work on the trauma caused by my husband so I'm in therapy. Since I found out my best friend has been there through everything, coming with me to doctors appointments, he even went and bought the baby some clothes. He's so excited even if the baby might not be his. With my divorce going on my husband is trying to get the house and he took all the money out of our joint savings account. He may take the house from me because he can afford a good lawyer. My best friend asked me to move in with him. He actually lives 45 minutes away in a small town close to his family and I love his family. They are like mine and I would like to be close to them because they are great. Honestly I don't even want the house. Too many bad memories, but idk about moving in with him. It's not anything he's done its just with all my trauma and stuff im scared. I'm also scared ill get even stronger feelings for him and even though I do love him I know a relationship isn't what I need right now. He's been super respectful of that. I just feel so stuck and confused but im trying not to stress out the baby. He says he understands if I want to stay at my house and he will just continue to make the drive, but his house is open to me... I was hoping any of you can give me some guidance.