6x19 - 7th Heaven

A startled Eric catches Mary and Lucy in the kitchen with Ben and Kevin in the middle of the night. The guys end up spending the night in the living room with Mary ad Lucy. Ben and Kevin's sister calls the house to inform Ben and Kevin that their mom is going out with a neighbor. Eric suspects that Ruthie knows a secret about Matt and Sarah and thinks they are married already. Meanwhile, an older couple seeks guidance from Eric when they can't seem to let go of their forty-four-year-old son, who has run away from home.