Donna, There is nothing you can do. And thinking about it too much is not going to help you. He is making his own decisions, good or bad, and he isn't thinking about you. Apparently he hasn't thought about you in quite some time. I would imagine he isn't thinking that much about her either....he is thinking about himself, which I think is all he does think about. He is selfish, and eventually he will do the same thing to her, or she will realize what he is and walk away, or they may stay together, who knows?! It doesn't matter. You have no control over what he does and you know it is not good for you to be so mentally and emotionally involved in what he is doing. Please let it go. Take a bath or read a good book or watch a movie. there is nothing you can do to change him, let him go.
"You can't stop the waves, but you can learn to surf." Jon Kabat-Zinn
