Gwen says she has married and divorced Derrick twice but she would take a third trip down the aisle if he would fess up to his mistakes. Derrick says Gwen is a "vindictive, sadistic succubus" who is out to ruin his life. But Derrick doesn't rule out rekindling his relationship with his ex. So why after two failed marriages would Gwen and Derrick consider walking down the aisle again?