Wanttosurvive...this is DD #3 for me and WSO. We've been together for 29 years, living together for 16 or 17 of that. His AP, same younger woman each time. We are both 62. The first DD was right after we moved in together. I rugswept and he promised. She was this young girl that he met on his bowling league. They went to a bar after bowling and she followed him into the men's room and had sex with him there. She did this a couple of times. I thought at the time...what man wouldn't love that?? He quit the league and we moved on without even talking about it. I don't know exactly, but almost 10 years later she wrote to me and told me about their 5 year A. He was home every night and weekend. So, their 'meetings' could only have been lunch hour quickies. But she saw 'love' in that. There were tears and yelling and a lot of drama....more promises...but no real talk or dealing. More rugsweeping by me. We bought our dream home and lived here for only 2 years before he started 'seeing' her again. According to them both, they 'saw' each other for over a year and a half before they started having sex. I found out on Christmas eve morning. I had found a possible place to move to (I have horses and dogs so finding a place to move was not easy) and it scared him lifeless. He asked me to stay long enough to hear him out and see if there was any way to fix it.
Sorry this is long, but I wanted you to know the background before I speak to your question. You said you were going horseback riding, and I wondered if you have horses as well...if you do, I know the special problems involved in trying to separate a life when you share living beings. Some of the younger people here have children, and that is a special consideration you have to give, but for me, the thought of splitting up horses and dogs was just as hard. And that's before you get to the household goods and the house itself. So I stayed, he talked, I talked, I got IC. He was willing to go if I asked. We had our own counseling session after each of mine. He has done everything right...support, listening, reworking the way we deal with problems, opening up himself. Things are marvelous between us. I have no reason to doubt him...but that's the pattern. A long honeymoon period and then he seeks out this woman who apparently is ALWAYS available for him (she's been available to him for half of the 16 years off and on....WTF? No life of her own?)
My story is this...3 DD's is enough. I did not deal with the issues the last two times. So I felt it was in my own best interests to TRY this time as long as we could work on it. I love this man. I want to be with him, we are good friends and are working on being good lovers and partners. BUT, this is it. I live every day now knowing that this could happen again. I am doing everything I can do, on my own part, to be the partner he needs (not excusing his choice of having an A to deal with problems, but I owe it to myself and to him to work on my own issues.) If it happens again...that tells me it has nothing to do with me and he is unable or unwilling to curb his own destructive methods of dealing. I won't stay again.
You are already in MC and IC? Are you certain he's really working on it, or going through the motions? What was in the email exchange? Was he trying to pick up the A again, or seeking emotional support? Does it matter? For me, one more time and I'm out. Horses, dogs and all and I have a plan in place and he knows it. It involves a friend all the way across the country with a barn and a spare room and he would never see me again. THAT's what keeps him working on it now.
You kind of have to know what that line is for yourself. We're both toeing my line. As long as he is working on his own issues and we are both working to make our life together better than his A...I forgive the past. Maybe that's the point...what is he still looking for with her? What was he missing that he wanted her to give him and why did he not want that from you? If there is something he needs that he CANNOT get from you... you have two options, let him go find what he wants elsewhere or you live with his cheating forever. Only you two can work that out.
If this rambled, I'm sorry. But I know the pain of multiple DDs and it just comes pouring out sometimes. I'm so sorry you have to face it too.