It is bad to spy on others.
Jack thinks that his girlfriend Kate is having an affair with his best friend Mike.
Jack wants to check what Kate is doing.
Jack goes to Kate's room and sees that Kate is studying for her exam.
Jack climbs up to the window of Kate's room and peeks inside.
Jack feels good about Kate and goes back to his place to study.
Jack notices that Kate is studying, but he slips and falls down hard on the ground.