Why did we stay together?
It had to get to the point where I knew I didnt care any more. Relate was an accident, actually. I had moved out of the bedroom formally and seen a solicitor, which he knew. Prior to that, about 4 or 5 weeks earlier, we had had a whole lot of talks and he was committed for the first time to accept responsibility for mending the relationship- he had made a reasonable effort for three weeks, and then I found more photos, the first in over a year, and they were very recent- the week before. We discussed for over a week and he behaved as your h has, denying all etc. I would not let it drop. The fact we were supposed to be on a fresh start made it worse.
Then we had a minor row over his shitty issue involving the kids, where he was completely unsupportive. I snapped and moved rooms, and stopped talking to him. I intended to split, and HE KNEW IT THIS TIME. That was the key thing- he knew damn well that I had had enough, and I think he was scared. He tried to talk to me and butter me up, and got nowhere. It shocked him.
Relate happened to call a couple of days later quite by chance, as I had called them for an appointment a month earlier, when we had our original fresh start. I had quite forgotten about them by then.
We agreed to go, but still didnt talk at all until we got there. I listed all my complaints, including the infidelity. He denied it. But he only spent one week, to my amazement, denying anything else. All the bullshit he had given me over the years, and all the ignoring my complaints, fell away. He was in tears for nearly a month, and admitted a whole lot of crappy behaviour towards me.
Finally, we had enough to be able to talk, and I made it clear both to him and the Relate guy that I could not commit unless he admitted what I knew in my gut to be true. He didnt really have a choice, although he did say that when he told me he thought I would leave him, but that at least he would have given me that. I think it took the relate process to enable him to be willing to see it that way, as the counsellor had got him to doo alot of thinking about his manipulative and prevaricative behaviour generally.
The only reason I stayed is that he bust his ass to change from that day on (5 November last year), and for four months he has been a changed man. He agreed that it was not my fault, and that whatever the problems in the relationship, he had been at least 50% responsible for them. That his response (re other women) was wrong and shitty, and that he had tried to control me and hold all the cards in his hand. That many of his problems stemmed from long term workaholism, and poor stress management as a result. He committed to sort this out, and has to date.
I know that many people on here feel I should have left. I didnt. However, I WAS making serious preparations to leave, and would have, which made all the difference. We were not talking at all outside the Relate process until he admitted all, so he had no way to control my emotions.
Hope that helps.