OK so, I probably shouldn't have but I found OW's email address and after a long time trying to decide what to do with it I sent her a short email saying that I'd found emails between her and my H and would appreciate hearing her version of what the nature of their relationship is. After four days I was kind of thinking what an idiot I'd been and that she wouldn't reply - well she has!!! This is what she has said:
"I'm not really sure what to say. The truth is we talked a lot. We met when I was on shift with him and he was a good listener. I'm not going to insult your intelligence and say there was nothing more to it, we talked about stuff that we probably should've been talking to our respective partners about. If we had both been single I think it would've gone further but we were'nt and it didn't, I couldn't drag my little girl into a situation like that. After I left the shift it went to texting and emailing just to keep in touch then it was a text at birthdays etc. I haven't heard from him since before Christmas I think. I'll be honest and tell you that I did try to text him to ask what was going on but I think he has either changed his number or blocked mine, but I'm assuming you already know that. I'm not sure if apologising will help, but I am sorry for everything."
