Beyond Compare (1989)

It was a mistake. It just had to be Surely Howard would come to his senses and realize Holly was the one for him. When he did, she'd be waiting. Meanwhile, though, Holly Witchell was determined to make Howard Neston appreciate what he had lost in jilting her for her glamorous schoolmate, Rosamund. And who better than Drew Hammond to help her--after all, Rosamund had jilted Drew to become engaged to Howard. It seemed logical for Holly and Drew to pretend to be lovers while theywaited for their real loves to change their minds ....