Responses
It's not about getting revenge, it's about getting leverage and blackmail in order to get the gangster to leave him alone ("Stop hunting me down and trying to kill me or I'll post this gay-porn vid where only your face can be seen").
And no, the pink-head can't go to the police because he has a criminal record for a crime he apparently didn't even commit and was even in jail once already, remember?

You don't have to rape somebody to have revenge. Get some knuckle duster and beat that son of a bitch ╮( ̄▽ ̄)╭