You were at a bar with some of your so called “friends”, you drank a lot because your friends forced you to.

You got really drunk and could barely walk without tripping over things. Then your friends left you at the bar.

John is your enemy and he was at the same bar. He saw you laying on the couch drunk as hell and figured he should help you.

So John grabbed you and drove to your house, your place was filthy and cheap. He dropped you on the mattress and turned to leave.