By LOUISE SAUNDERS
They're fast cementing themselves as one of the pop world's hottest young couples, and have even coined a catchy joint moniker - Haylor.
And it would seem Harry Styles and Taylor Swift's fledging romance is going from strength-to-strength as they enjoyed a second consecutive sleepover on Tuesday night.
The One Direction heartthrob was pictured arriving at the 22-year-old singer's hotel at 11pm, just an hour after Taylor had returned from her recording session at New York City's Pier 59 studios.
Looking somewhat sheepish as he kept his head down while walking into the hotel, the 18-year-old star was carrying a large overnight bag in preparation for his stay.
Although their second consecutive date night would suggest the pop-tastic duo's relationship has come on leaps and bounds in the past few days, it would seem one person in particular hasn't taken too kindly to the new romance.
Hailie Jade Mathers, the 16-year-old daughter of rapper Eminem, blasted Taylor on her Twitter page, declaring that Harry was the 'love of her life'.
After wishing the singer's One Direction bandmate Niall Horan 'good luck' ahead of the What Makes You Beautiful hitmaker's Madison Square Gardens performance on Monday night, Hailie wrote: 'if @taylorswift13 is really dating the love of my life @Harry_Styles i will not be happy.!'
But the rant didn't end there, with the smitten teen then hitting out at Taylor for 'whoring around' to find sufficient heartbreak material for her new album, and declaring she would never listen to the country music star's tracks again.
She tweeted: 'Dear @taylorswift13, please stop whoring around with every guy you see. We all know you're only doing it so you can make another album.