 In "The Duel", Michael informs him of Angela and Dwight's affair, and Andy responds to this by confronting Dwight and challenging him to a duel.They meet out in the parking lot, where Dwight realizes that Angela has had sex with Andy as well, despite telling Dwight that she had only been sleeping with him.Realizing that they have both been lied to, Andy cancels his wedding cake, and Dwight throws out the bobble head in his likeness, implying the men's relationships with Angela are now over.