Diane's ex-fianc? Sumner Sloan, returns to Cheers looking for Diane. He has come to apologize and suggests to Diane that they go out for dinner so that she can meet his wife Barbara. She reluctantly agrees, but when Sumner mentions that Diane is welcome to bring any significant person in her life to the dinner, she does not mention Sam. Finding this out, Sam is hurt and offended, thinking that Diane is ashamed of him, especially in the company of brutally intellectual Sumner. Although she doe ...[Read Story ]