I can say that age does not mean anything just because it is called midlife crisis. I was 59 and never thought it would happen to me. The fist thing that happen was over a decade of no intimate R with my H and then I become depressed and bored and then I started playing internet games b/c I was bored and then first thing you know I was chatting on the internet and then you can probably guess what happened next. So, unless I live to be nearly 120, I don't think it matters what age you are.
I can tell you that it is a horrible feeling and when OP gets involved, which it usually does, it is awful for the entire family. I can also tell you that I probably came out of mine (if I'm out yet) sooner than the average person according to what I have read. One thing, I truly wanted to get out of the situation and I prayed real hard and the people here on the board helped me so very, very much. Also, being as old as I was, I think probably kept me from totally going off the deep end in MLC like some seem to do. I mean, I wasn't about to put on a mini skirt and bar hop or anything like that. Being involved in an EA over the internet was bad enough without making a complete fool of myself. On the other hand, I felt like a hyocrite b/c I would go to church and know I had the OM in my heart, so I felt like I was living a double life.
Anway, that's about me and not your H. I hope I did answer your question about the age and MLC.
Best wishes, Sandi
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!