Harry Styles Gets the Ultimate Revenge on Old Classmate Who Stole His Girlfriend [VIDEO]

Revenge was a dish served on stage.

We've all been there.  We wanted to get back at that guy or girl who 'stole' our boyfriend/girlfriend.  Harry Styles never forgot the name Jack Robinson, and he happened to see him in the audience.  Be careful who you steal, because you never know who you'll end up stealing from.