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One Direction's Niall Horan is newly single.  According to The Mirror, the 19-year-old singer has split up with his girlfriend Amy Green, a 20-year-old drama student and aspiring actress. 

The relationship didn't last much longer than Harry Styles and Taylor Swift's - the two reportedly started dating last October.  The source says Niall was the one who ended it because of his hectic schedule - and maybe just in time, as One Direction is kicking off their eight-month world tour this Friday. 

The source adds that Amy isn't taking it well, as she ended a four-year relationship to try things out with Niall.  But Amy seemed to have a different version of the story and took to Twitter, saying that some of the reports about her split were "very funny."  

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