Remember - he TOLD you that the OW called him. (at least I think that's how you found out). He did not lie or try to hide it. That's a good thing. It means he is open to you. If you read "Not just Friends" it talks about windows and doors. During the EA, he built a wall between you and him, and opened a window to OW. Now he is building a wall between OW and him, and opening the window to you. Both take time, but he is moving in the right direction.
Me 42, W 39, S8, S6, S2 M 11y, A & ILYBNILWY 11/08 Walking away from a bad situation.
