Enemy's with benefits

Colby hated one guy and one guy only. This guy stole his chance to be captain of the football team, mocked him in front of the team and -the cherry on top- slept with Colby's girlfriend. This guys was Ezra Dickinson. Colby swore that if he ever got the chance to get revenge on the guy he'd do it. So why did he get sent a anonymous photo of him making out with Ezra at a party? He decided to confront Ezra about the photo but his confrontation gets heated. Although, not in the way Colby was expecting. The picture is not mine.