It's rude to call your roommate creepy.
Ryan's roommate Todd is in a very strange relationship with a younger woman.
Ryan wants to tell Todd he's concerned about his relationship.
Ryan asks Todd what he sees in the younger woman, and why he is so transfixed by her.
Ryan calls Todd a pedophile, and tells him how inappropriate it is to date someone so much younger.
Todd explains why he loves his girlfriend so much, and assuages Ryan's concern.
Todd gets very offended, and decides to move out on Ryan with no notice.