In regards to the MLCer "having fun" and especially the "pleasure" they are getting from their REPLAY behaviors, I really think from everything I've read about these men as products of childhood trauma (especially) have a completely different definition of "pleasure".
My Ex-H stood in my living room with tear filled eyes and told me he has not been happy for 34 years. That is his whole life. He later said, there have been highs and lows, but he certainly had bouts of depression.
I do believe these MLCer's are completely emotional numb (chronic depression) during "REPLAY" and that it is the "forbidden fruit" behaviors that are allowing them to feel at least a little bit, maybe sometimes a lot. They are not out there "living it up" while we take care of the children and household responsibilities. Every moment is still just trying to "survive life" and not actually live it.
I believe my H came to me in a depressed state. My Dad was is a depressed man, so I always said "it's a man thing". Despite his lack of engagement and periods of isolation, emotional outbursts, pity parties, etc etc.... I loved our marriage and family unit. We were best friends. I have no regrets. I do think though, that when he married me and all, he thought that was the answer, and it didn't work. he was still unhappy. I DEFINITELY do not blame myself.
I am no longer standing because he is a clinger, and I found the cycling really difficult. I was obsessing and impatient, and I as becoming passive aggressive. I'm so thankful for this post because at one point I thought I'd completely driven him away. But I kind of figured that no matter my behavior, this thing will last as long as it will last.... nothing can shorten it, aside from death.
My point in this dump of text is that their definition of happiness and pleasure is completely skewed.
I also believe that if they're telling you they're happier now when you didn't ask, it's because they certainly aren't!!
He says what he doesn't mean and what he means he does not say.