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.
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