Harry Styles denies dating Made In Chelsea's Caggie Dunlop
Reports of the pair's romance surfaced after 18-year-old singer Harry was apparently seen getting close to Caggie, 23, at London's Dorsia club on Thursday night.
They were then spotted leaving Dorsia together and heading to Harry's car.
And the two are said to have been flirting with each other even before One Direction headed to the US for their headline tour earlier this year.
A source told The Mirror: "It was obvious Harry had a bit of a thing for Caggie because he started tweeting her before they had ever even met.
"And when they actually saw each other in person they hit it off straight away. There was obviously real chemistry between them."
They met for the first time last summer at an East London party, after which Caggie is said to have invited Harry to stay at her aunt's Chelsea flat.
But nothing happened because the reality TV star was concerned about the age gap.
But the pair insist they're they're just friends.
Harry's spokesman tells Mail Online: 'Harry is not dating Caggie and is not romantically involved with her.'
Caggie recently split with Australian fitness instructor Joel Steel, while Harry has been linked to a number of gorgeous older women since splitting with 32-year-old Caroline Flack in February.
It was recently claimed that Harry got close to radio DJ Lucy Horobin, 32, for three months when she was estranged from her husband.
Lucy and Harry are said to have got together shortly before the 1D star hooked up with Xtra Factor host Caroline.
Lucy has since quit Twitter after receiving a string of abuse and threats from One Direction fans.
She tweeted shortly before leaving the site: "To clarify, I haven't said ANYTHING to any press, nor do I wish to. Thank you to those of you who have said kind words today. Xx."