You say he is respectful and cares for you. Has he made a commitment to you and said he loves you? You are about to have a baby and don't need a man in your life that is not committed to you and your baby. You say he wants you back but does he talk about wanting you and the baby in his life always? Does he put you first. You are about to get very busy with a newborn--you will need support. Also, do you love him? I wouldn't live with someone unless I was sure that I loved them and vice versa. I wouldn't live with someone who dates other women. I think you know this. Don't sell yourself short by continuing to have sex with a man who doesn't put you first.