First of all, stop asking H about OW! Don't mention her at all. Don't quiz him about his whereabouts or what he's been doing. God, that gives W's a bad name!
You must show self repect and dignity. As long as you try to interrogate him and cause him to think he has to answer to you, then he is certainly not going to be attracted to that!
Stop acting like a clingy, needy wife and become more attractive in personality, looks, behavior, etc. Get a do-over and go out and GAL. Leave him alone. Drop that rope you have around him. He doesn't want what you have become.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!