DEAR ABBY: My husband and I have been married more than 20 years. Once in a while, he’ll stop being affectionate and ceases talking to me. Obviously, he is upset. He holds it together for our children, but I get the serious cold shoulder. He won’t tell me why he is unhappy. He simply expects me to give him “space.” This is difficult because I assume it’s something I have done, and I want to make it right. After several days, he’ll start coming around and talking to me again, and he expects me to jump right back into our ...