Part of the heart says yes and part says no

OK this is pretty long I'm going to try to make it as short as possible so my boyfriend of 7 1/2 years recently cheated on me and supposedly the girl is pregnant I kicked him out and he's been out for a bout a week every day since I put him out he's been begging to come home just recently he came to me crying saying that he's sorry he's going to love me he's going to treat me better and he don't want to be a player anymore my heart really wants to work it out a part of it anyway I told him if I allow him to come home and order for us to work he has to stop all communication with this girl if you're going to abort the baby he needs to give her half of the money or they're going to keep it he needs to have a blood test and if it's his he needs to be a father if not he needs to let it go I also told him he needs to respect love and appreciate the things I'm doing for him he claim is hard to stop communicating with her because she feels like she's being pressured to have an abortion but she has not shown any papers or any proof that she's pregnant I don't want to seem harsh and mean but I really feel that he don't need to have any type of communication with her I love him I'm just so afraid that he's going to have my heart again he claims that I make him happy and these days apart has made him realize that I am who you want to be with I am the one he wants to marry do I allow him to come back home and try to work it out or do I allow him to handle his situation with the girl he cheated with in this baby situation before I allow him to come back home part of my heart once on here once a love him and a part of my heart is very scared please lay to give me some advice and please don't be too hard on me yes I love Amanda cheated and yes a part of me wants to take him back I can't help who I love and I'm sure some ways out that understands where I'm coming from