Despite the disapproval from the rest of the family and his own hesitations, Eric invites Mary's ex-boyfriend Robbie Palmer to stay with them for a night after learning that he's homeless. Matt also shows up unexpectedly after being kicked out of his apartment by John, who needs quality time with his girlfriend. Meanwhile, Mary calls home again and hears Robbie's voice on the other end, and assumes he's dating Lucy now. Also, John proposes to his girlfriend Priscilla in front of Matt.