One Direction's Harry Styles Teases One-Time Love Rival On Stage: Watch

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Harry Styles of One Direction performs on stage during the "40 Principales" awards 2013 ceremony at the Barclaycard Center (Palacio de los Deportes) on December 12, 2014 in Madrid, Spain.

Revenge, as the popular expression goes, is a dish best served cold. Harry Styles, it turns out, does revenge like a pro.

The One Direction heartthrob has taken down a former love rival in the coldest way possible -- by calling him out from the stage at one of his own concerts. 

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Styles, like most other people on the planet has had his heart crushed. But unlike just about everyone else, he’s a cornerstone of a seemingly unstoppable, chart-busting and box-office smashing pop group with almost 25 million followers to his personal Twitter account.

It turns out the then teenage Brit had a girlfriend “stolen” by a pal, Jack Robinson.

He’s waited some time to dish it up, but Styles ensured Robinson got his just desserts with a shout-out at 1D’s recent stadium show in Oslo, Norway. Styles regaled with a tale and asked the audience to jibe Robinson, who was in the audience with a camera trained on him and no doubt wishing he was somewhere else.

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“O.K., I have a friend from school in the audience tonight called Jack Robinson,” Styles told the crowd, while pointing in the general direction of the guy. “I’m going to tell you a quick little story before we do the next song. When I was about 14 years old, Jack Robinson stole my girlfriend. So if he’s still there at the end of the show, feel free -- little kicks, little digs on the way out. Jack Robinson, love you, sir.” Jack, meanwhile, was caught on the big screen giving shrugs and the universal sign of “sorry.”

Oh, the shame.