Great topic. I think lawless makes an interesting point that sex with an MLC/WAS does nothing to shorten and may actually lenghten MLC.
Sex had become an issue in my M b/c I wanted it and H used it against me. What I find fascinating is right before the bomb, it was great! Even a few times after the bomb. It's down to nothing now. I won't initiate and he doesn't. I don't know about an OW, so if he were to suggest I probably would. I do agree that with an OP in the picture, it isn't helping anything. I refuse to feel cheap (and I would) just for a connection.
I think the decision is personal though and look forward to hearing what others think.