The One Direction member attended a VIP Coldplay concert at the Ace Hotel in Los Angeles a few weeks ago with a woman, who later was identified as Daniella Monet.
The Nickelodeon sitcom "Victorious" actress is a huge fan of the "Midnight Memories" hitmakers - she previously took to her Twitter account to show her love and support while seeing them performing at the Rose Bowl.
There are also rumors that Harry may have hooked up with daughters of rock royalty, Pixie Geldof (daughter of Sir Bob Geldof) and Kimberly Stewart (daughter of Rod Stewart) as well as a number of models, but these are all unconfirmed. There is a mysterious brunette that Harry has been spotted with a few times recently, but nothing has been confirmed. Every past girlfriend has had to endure the online wrath of tons of abusive One Direction fans!
Who wants to put up with that until you are sure you are in love right?
Also at the party: fellow singers Jessie J, Tinie Tempah, and Welsh actress Alexandra Roach, who left with Styles as the soiree came to an end.