I am friends with my EX's GF. I think. We get along real well we text a lot about issues unrelated to EX. We both have daughters around the same age who are great together. My EX is pretty up there in the shithead category. He is not the worst but he's no where near the best. I invited GF and her daughter to come to an event with me and my daughter. It turns out her daughter is going to be on vacation with her dad and can't come. I figured that was that but then GF made the comment that she was still coming. I have never done anything with just GF.