Christina13,
I am sorry you are here. Usually the OW/OM is an AD. He doesn't love her he loves how she makes him feel. That feeling is addictive but it doesn't last. I am sure you see the utter confusion and the back and forth cycling that is going on. This is the most difficult time for you as the euphoric feeling is at an all time high. Did I love OM? No, but for a period of time I thought I did. The feelings wore off and I could see things more clearly and I could clearly see although I cared for him it was not love and my love, my heart was still with my husband.
This is exactly what I have seen in my husband. He did say he "loves" her but around the same time he said he loves no one. He also said he wants to "feel love" from her. It's about him. Although there is no euphoria. He's in constant depression, but he is still hanging on to what he decided to do.
The one thing that is very clear to me is although he uses an excuse that she "deserves" all his attention, truly there is a fundamental difference in how he relates to her versus me. This is an "deserving" is an excuse to cover up what he wants out of the relationship because he knows she doesn't deserve better than me.
He wants me to be happy and comfortable, he wants to take my opinion on things, even if I tell him he is doing something wrong. OK, he's not making me happy right now but in his fantasy mind he WANTS me to be happy. I give him a little credit for that.
As for OW, she is like a servant, her purpose for him is to do what he asks of her and he doesn't want her to tell him he is wrong in anything. He "forces" her to watch his favorite tv programs, even though she has no interest in them.
Funny thing is we are a rare couple in that we never argued about what we watched on tv. The remote was never an issue. We liked the same things on TV.
Yes, she is getting most of his attention right now, but is the OW getting the good quality attention you got in the past? Do they have in common mutual respect and interests? Are we actually missing anything if he is not paying attention to us? What I have concluded is not that I need to detach "for myself" as the conventional wisdom goes regardless of whether he comes back, but really because as much as I hate detaching, my husband isn't that capable of giving me QUALITY relationship time right now. And the more I am exposed to him and I am not getting it, the more it will cause stress between us that could have negative long term effects. The time we do spend together we get along. It's not the interaction I need, but it is OK interaction. The fact is that a year or two down the line he won't be able to say we spent the last two years fighting. It will be time he can look back on where we got along, where when he asked my opinion on something, he got an intelligent and helpful answer, that we worked together to make our home more comfortable for us. Not all the time with the OW will be that way. The more time he spends with her, the more time there will be problems, because these men are confused and in a bad state, let him unload the bad state on her, not yourself.