Cyrus' (Jonah Hill) actions eventually get exposed at John's (John C. Reily) ex-wife Jamie (Catherine keener) wedding.
John breaks it off with Molly (Marisa Tomei). Molly then has a tough conversation with Cyrus over whether she raised him right.
Molly goes into a funk. Cyrus is worried and tries to talk to John. John doesn't want to at first but has a change of heart.
The film concludes with John looking at Molly at her house, ready to give their relationship another shot.