What small signs are you talking about? The things I pointed out to you are not what I'm seeing as "signs". These are things that you have tried to convince yourself is going on....but it is not any signs that I can tell. Him introducing you as his wife is not what I would call a sign that he's coming around. My gosh, that is what a H is suppose to do! How else could he have introduced you? Plus, he was going to be nice to you in front of a crowd watching. He was going to keep up the image! And, I honestly don't see anything else that was a "positive" b/c look how he treated you when he left for the airport. He gave you all that information about the guy's phone numbers, but that was a cover up. You just wanted to think he was coming around b/c you are trying to fool yourself.
I'm not telling you he's never coming around. Where did you see that? But, it may be a very long time and a lot of it may depend on what the OW does toward him. I'm not telling you to give up, but I'm trying to get you to see this for what it is. See the reality and stop kidding yourself. Detaching is not giving up. You need to understand that.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!