Ugh, I know too well how this feels.
After my most recent boyfriend and I had been dating a while, I was at his house one night alone and bored, so I decided to go on the computer til he got home. Imagine my surprise when I started typing in a web address and it was auto-filled in with match.com. I HAD to know why, so I clicked and he had left his account logged in. At this point, I didn't care that I was about to look through his account. I didn't feel I was doing anything wrong or breaking his trust because he had already broken mine by having an active match.com account while we were in an exclusive relationship. Long story short, I found out he'd been talking to girls for weeks.
I didn't really snoop after that but I did message the girls he'd talked to telling them he had a girlfriend, then I cancelled his account. We eventually broke up for several reasons a few weeks later.
The BEST part of the whole thing, though, was that just ONE week after we broke up he was already dating a new girl and saying he cared for, which was unbelievable to me. How could he say he loved me, but just one or two weeks after I'm gone already have feelings for someone else? I was livid, but what goes around, comes around. After he'd been with her for a little less than a month and a half, HE found HER talking to other guys on Match.com. Obviously he was upset, and came to me to tell me what happened and also apologize for doing the same to me. I care for him and don't want to see him hurt, but I can't lie and say I wasn't a little bit happy she did that to him. I love the guy, but he deserved it.
He then said he realized how great I was and that he wanted me back. I'm not sure if this was smart, but I agreed because I love him and felt he was sorry. (I swear this part of the story is relevant to cheating). He seemed so sorry and said when I came to stay with him the next weekend he'd make everything up to me because he felt so bad for what he did to me. Long story short, I visited. And what happened?
A. It seemed like I was trying to make HIM feel better all weekend. It felt like I was trying to let HIM know that I loved him and things, as if I needed to. I wasn't the one who cheated. I know he was upset about what happened with the other girl, but I'm sure the hurt he felt when a girl he didn't love and had only been dating less than a month and a half didn't nearly rival the hurt I felt when he did it to me. We had been together longer and said we loved each other.
B. He still snoops her match.com account, which tells me something. His head is still with her, not with me. And that fact tells me something else: it's much more likely he asked me back because he was upset and lonely than because he actually wanted to be with me. I don't know for sure. I don't understand him completely because he doesn't understand himself.
Point is, I'm starting to question if his mind was ever in a place where he wanted to cheat on me if he could ever want to be with just me again. I'm beginning to think he only asked me to be with him so he could have a warm body in his bed until he finds someone else (granted, I have reason to believe that considering he tells me how he's not sure he wants a relationship, so it's not quite the same situation as yours). Regardless, you need to nip this thing with your husband in the bud. Emotional cheating exists. Either he wants to be with you or he doesn't and you need to know. That's all I'm asking from my boyfriend: that he tell me what he wants. It might hurt, but at least I wouldn't be living a lie thinking just because we're together he truly wants me.