Back with the Ex

Emotions run high as the former couples reunite for first dates, and "ex-pectations" are tested during an evening of alluring temptations.

A radical roommate exercise leads to a string of emotional letters. Peter shares a troubling secret with Diane. Jeremy faces his toughest critics.

The couples trade spaces and establish new sets of rules. Cam orchestrates a high-stakes reunion. Peter struggles with a heated confrontation.

The couples reach the end of the "ex-periment" and face a crucial decision. Can love conquer all, or are some feelings better left in the past?