I got physical with my X early on and the relationship lasted about 25 years. I do think that OW "held out" and that is what made him so hot and bothered for her and now she is married to him. But they rushed into marriage and he was complaining about her within a few months of getting married. So I'm not sure what the answer is....
"You can't stop the waves, but you can learn to surf." Jon Kabat-Zinn