S03E20: Rent a Romeo/Matchmaker, Matchmaker/Y' Gotta Have Heart

Doc's plans for a rendezvous are spoiled when the woman's recently dumped (and extremely depressed) sister tags along on the cruise. Doc tries to get some privacy by having a playboy romance the sister. Vicki helps a young boy's efforts to reunite his divorced parents. A woman tries to keep her husband on a short leash, as he has recently undergone heart surgery and she fears he will drop dead at any moment.