I'm currently 6 months pregnant with a beautiful baby boy. It is a messy situation with his father because he cheated on his gf with me and i had no idea. He had told me they broke up and I liked him so much I fell for him. He has been the only guy to give me butterflies, even his friends saw a difference in his personality when we were together. When he told me they were getting "back together" he never said he loved her and pretty much said it was an obligation. Then a few weeks later I find out I'm pregnant which was a big surprise. He wants to be there for his son and be around for him but he is still with his gf and I don't see him leaving anytime soon. she knows all about me and doesnt like me because of the situation. I have asked her a couple of times to have a sit down civil talk to clear the air but she has never given me a response about it. I want us to be civil to eachother for the sake of our kids, but i feel like im wanting that alone. I don't want to keep my son's father away from him but I'm just scared of what she will do to my son if anything. I also dont want her to be the reason my kid doesnt know his dad or brother and sister (he has 2 other kids with her). When we go to mediation I'm going to make it a rule that she is to never have my son alone. Am I being reasonable or too harsh?