Im scared

My guy... I love him so much, but he's a Satanist. I just found out yesterday. He solely believes in this. He says he's not sure about how I would feel if he moved in with me. He also wants me to have his kid a lot sooner, I was on board, but now I'm really scared. Im now taking birth control, its too much to have God and the Devil in the same house. Let alone a kid coming into that. I just don't know what to do. My heart loves him so much, but apart of me wants to run. What do I do? I can't have a kid with this. He/she will come out confused right?