One Direction singer Harry Styles is dating Katy Perry to get his ex-girlfriend Taylor Swift jealous, rumors on social media are suggesting.

Speculation over his new girlfriend began when a source revealed the new couple went on a date.  

"Katy and Harry had dinner together at Nobu in Malibu late Thursday night. Just the two of them," a source told Hollywood Life.

"They seemed happy, smiling and enjoying their dinner and conversation."

Hillary Duff revealed during a recent interview that she wants to collaborate on a duet with Harry Styles, leaving many fans wondering if his ex-girlfriend Taylor Swift is jealous.

"I might go with an unknown or an up-and-comer just to give the song even more of a quirky feel," Duff said during the MTV interview.

"But secretly, I really love Harry Styles, but he's kind of busy with One Direction - I know this - but I am a secret 1D fan."

Taylor Swift's "1989" album includes a song named "Style" where she discusses her relationship with ex-boyfriend Harry Styles back when they were dating.

"Then there's the song that sets a new high-water mark for Swiftian faux secrecy - a sexy Miami Vice-sounding throwback about a guy with slicked-back hair and a white T-shirt and a girl in a tight little skirt that is called - no joke - 'Style," Rolling Stone wrote in a recent piece about Taylor Swift, hinting that it is about Harry Styles.

Marketing research company Plusnet conducted a survey asking fans who is likely to be Harry Styles' next girlfriend-the results suggested Miley Cyrus could be the next woman he will enter a dating relationship with, Cambio reports.

Here is a complete list of other female celebrities ranked as possible dating and girlfriend contenders, via Unreality TV:

#1 Miley Cyrus
#2 Katy Perry
#3 Selena Gomez
#4 Cheryl Cole
#5 Cressida Bonas
#6 Katie Price
#7 Amy Willerton
#8 Susanna Reid
#9 Nigella Lawson
#10 Stephanie Pratt