Pretty mouth and green my eyes

The story was about two guys that are on th phone. the two guys are Arthur and The grayhaired man. Arthur tells the grayhaired man all his problems with the "love if his life". That he had brief flashbacks about what was going to happen in his future but he never paid attention to them and now he regrets that b/c he's married and doesn't feel love for Joanie. Arthur tells the gray haired man that he wants him to hang up on him and let him die of sadness and regrets but the grayhaired man doesn't wants to hang up on him b/c he wants him to be brave and not commit any stupid things. While on the phone he tells every moment of happiness that he and his wife use to have and that he dedicated a poem called "Pretty mouth and green my eyes" but she doesn't even has green eyes thats what Arthur said. The gray haired man understood what he was feeling and just gave looks at the girl.