His religion bothers me, what do I do?

Your only choice is to leave him, because if you stay with him, you will become like him. I had a witch tell me that demons are transferred to new members through , and that may have already happened to you. Romans 10:9-10 is your only way of salvation, and then you can be free from atheism and satanism. Then you can pray for his salvation and deliverance from satanism, and you will have a brand new b/f. You will also be new! :)