The One Direction hunk and the 'We Are Never Ever Getting Back Together' hitmaker have been spending time together in the Big Apple while the group perform Christmas shows and the pair looked every inch a couple at a friend's birthday party at the city's Crosby Hotel last night (06.12.12).
A source revealed to People magazine: ''Taylor and Harry [were] being very smoochie. They definitely [looked] like a couple.''
Harry, 18, and Taylor, 22, reportedly held hands all evening while the curly haired lothario kept a ''protective'' arm around her the whole evening.
The sourced added: ''They're not trying to hide [their relationship]. The bar was packed.''
Earlier on the week the pair went public with their romance, visiting Central Park Zoo together and strolling around the park hand-in-hand much to the disbelief of onlookers.
One eye witness wrote on Twitter: ''Just saw Taylor Swift. Holy c**p! (sic)''
On Monday (03.12.12), Taylor attended an afterparty for One Direction - which also includes Niall Horan, Louis Tomlinson, Liam Payne and Zayn Malik - to celebrate their biggest concert to date, performing to 20,000 fans at Madison Square Garden.
Taylor and Harry then shared their vocals on a duet to a Backstreet Boys song on karaoke and partied into the night, returning to her hotel at 4am on Tuesday morning (04.12.12).