So true....I am in a similar sitch and I drive myself crazy over this. I take it personally...just like I did the whole OW issue. I thought it was my fault. I wasn't good enough or I wasn't doing something right that made him want someone else and now when there is any contact I feel so insecure all over again. He tells me over and over that he loves me and there is no one else, but it is so hard to believe after all the lies.
Truth be known....he wants me or he doesn't. I can't sit and agonize over whether he calls her or she calls him....it makes me seem less appealing to him when I do and drives him away. I just have to be me and hope that in the end he sees what and who are the ones there for him. That is all I can do....it is hard and heartbreaking sometimes, but I love him so much I am willing to go through that.

Take care and Good Luck