Harry Styles Celebrates 19th Birthday With Ex-Girlfriend

James Corden and Harry Styles at La Bodega Negra restaurant on January 31, 2013 in London, England.  Mark Milan/FilmMagic

Apparently Harry Styles doesn't write off former flames as quickly as ex-girlfriend Taylor Swift.

The One Direction singer celebrated his 19th birthday at London's private Groucho Club on Thursday night, and one very familiar face was in attendance: ex-girlfriend Caroline Flack.

The U.K. 'X Factor' host dated Styles for three months in 2011 despite the criticism she received about their 15-year age difference at the time.

Flack and Styles made separate exits out of the club, but Harry kept the party going. He and a group of male pals went to Base nightclub, reportedly staying past 3 a.m.

The singer tweeted yesterday:

Not surprising there was no birthday love on Twitter from Styles' most recent ex, Taylor Swift. Guess Styles shouldn't expect the birthday love from the "We Are Never Ever Getting Back Together" singer to be reciprocated since their breakup was anything but smooth.

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