S6·E24 Et Tu, Antonio?

When Antonio's cousin Dominic and his fiancée Teresa visit Nantucket, Antonio finds himself struggling to ignore his feelings for Teresa. He succumbs to temptation during supper at his apartment, after Teresa voices concerns over problems with her relationship, but he ultimately helps Dominic win her back. Meanwhile, Helen's side of the family outshines Joe's when the wedding gifts start to arrive.