One Direction star Niall Horan is back on the market. The singer recently broke up with his drama student girlfriend Amy Green.
 
Horan, 19, began dating the 20-year-old aspiring model and actress in October after they met in a London nightclub. But the Irish star's busy career kept him from spending enought time with her, leading to the split.

A source told Britain's Sunday Mirror, "Sadly, it is over between Niall and Amy. He finished it because he didn't have enough time with everything he has to do. Understandably she was disappointed because she had been in a relationship before she started seeing Niall and chose him over her boyfriend. But there are no real hard feelings and they're still close."