Peter convinces Fran not to stay away from her school reunion just to avoid her obnoxious braggart rival Jill, who married surgeon Frank. her plan is to take along even more desirable Elliot, who agrees at the gym to play the part. Peter tries out a 'gaydar' app. Fran ignores the gang's warnings not to hope for Elliot actually falling in love with her, so they stage an intervention. Jill ends up confessing her own depressing problem.…