Taylor Swift, Harry Styles: Party And Perform Backstreet Boys Song In Karaoke Sing Off: Share Night Cap At 4 A.M.

Taylor Swift can't get enough of her fairytale lifestyle. The country star continues to jump into one relationship to the next and her current contender seems to be boy band heartthrob Harry Styles of One Direction. After breaking up with Connor Kennedy, Swift is seeking some real romance for the holidays and after a strolling around in Central Park Sunday, the two are going public with their relationship...by holding hands in public.

The couple have been seen with each other for weeks now and the two can't keep their eyes off of each other. According to Us Weekly, sources say, "They lit up when they saw each other and he gave her a giant hug." The couple were spotted mingling at the MTV VMAs in September and have been developing a close relationship - maybe romantically.

While Swift rehearsed for her X Factor performance she allowed Styles to sit next to her mother and watch, "She was a puppy dog," an insider said. "She didn't let him out of her sight!" After her performance, Swift walked off stage towards her beaming "man" when sources said, "Harry picked her up and carried her to the trailer!" The couple seem to be getting closer to taking their relationship to another level. The couple make it no secret that they are affectionate as they hold hands in public and get mushier.

The couple linked up after Harry's concert with One Direction Monday night at the Madison Square Garden and Swift's performance at the Ripple of Hope Awards a dozen blocks north at the New York Marriott Marquis. Obviously tired from a long day of rehearsal, performing and partying the couple decided to have a night cap showing up at Swift's hotel around 4 a.m.
The couple linked up after each other's shows to the One Direction after party where they performed in a karaoke sing off to Backstreet Boys songs. According to People, sources say the couple, "joined together up on stage for most of the night." The insider added,  "They played a One Direction song and Taylor sang it."