DEAR ABBY: My husband and I have been married for 20 years. We’ve had our share of ups and downs, but always managed to work our way through them. Last year, he decided he no longer wanted to be married, saying the last 20 years “were not all that pleasant” and “we have never really gotten along.” (As far as I know, there isn’t another woman.) My problem is, for the most part, he still ACTS like he wants to be married. He has made no attempt to leave, tells me his comings and goings, asks me to have dinner ...