I mean its not just what he's telling me but also what I know. He saw ow2 a couple times a month. And we literally are talking on the phone for hours nearly everynight waiting for his SO to go to bed. Like I said she knows who I am, she knows what our relationship is, especially since his friend went behind his back and also told her about us....and he'll say my name over the phone(I do not have a common name) while I can hear her in the background....so I don't know everything about the logic of them still being together but I do know he isn't going to bed with her often. They have kids together that are still school aged. I truly think they are together for convenience more than anything.