If You Could See Yourself...?

During a house party a boy and girl enter a bedroom looking for a mobile. They’re having fun and start to kiss before the girl breaks away, wanting to return to the party. The boy is indignant at being rejected; he’s convinced they came upstairs for sex. He ignores her protests and forces her onto the bed. We see an exact double of the boy looking on, desperately trying to stop himself. End frame reads: If you could see yourself, would you see rape?