Haylor continues to heat up in the December cold! Taylor Swift jetted back to NYC after hosting the Grammy Nominations Live concert on Wednesday, Dec. 5 in Nashville, at which she beatboxed. She made a beeline for her new BF, One Direction's Harry Styles. The twosome was spotted having dinner and holding hands again the following night. If that's not a clear sign they are a couple, what else is?

T. Swizzle and Hazza were snapped leaving the Crosby Street Hotel in Manhattan and remained out until the wee hours of the morning. They reportedly had a romantic dinner –maybe to celebrate Swift's upcoming 23rd birthday on Dec. 13 -- and then headed back to her hotel at 4AM.

Swift bundled up in a brown coat with a swingy hem and a purple and black print scarf, paired with textured tights and her trusty black Oxfords while Styles was artfully disheveled in dark jeans and a furry collar coat with brown shoes and tee. They sorta matched.

PEOPLE reports that a source saw them attend a friend's birthday party, where they were PDA-happy. The source said the two were "very smoochie" and looked like a couple. The insider also said they stole plenty of kisses and weren't trying to hide their romance.

They are a delightfully good-looking pair. PopCrush is pulling for them and hopes they last. We don't need the follow-up to 'Red' to be called 'I Hate Harry Styles for Breaking My Heart.'

Both acts are set to appear at the Z100 Jingle Ball in NYC tonight (Dec. 7). They can pry themselves apart for a few hours to perform separately for their adoring fans and then resume at the hotel after the show.

Watch the One Direction 'Live While We're Young' Video