First, what were you expecting having unprotected sex? Lucky the story didn't end by saying you have HIV, since she was whoring around. Next, if she wants you but sees you are happy elsewhere, she is going to make you and your new relationship unhappy every chance she gets. Best thing you can do is make contact with her ONLY about the kid...don't ask how her day is, if the weather is nice, nothing. Don't get upset and yell...stay calm even when she pisses you off. Go get your kid, drop the kid off and leave. She'll eventually get the message. If you continue to fight her or yell back....it's just fuel to her fire and will never end. I got work to do, so good luck with all of that.....take care of the kid...it didn't ask to come into this turmoil you and her share.