Over a year later and my H is still with OW. Many people would tell me that he would drop her after a few mos. Well he hasn't. Their R isn't what it was in the beginning but it's still going on.
So sorry to hear that. And your point is well made, unfortunately the odds don't predict every outcome. When it comes to people you just never know what to expect, nothing is predictable. I have a friend whose wife walked two years ago. She moved in with another guy a few months after the split and has lived with him ever since. Now she and my friend are reconciling after 2 years. They never did get divorced. You just never know what's going to happen in life!