Taylor Swift, One Direction's Harry Styles Reunite At 'X Factor'

'Factor' host Mario Lopez says the pair held hands on set Thursday.

First Justin Bieber and Selena Gomez sparked reunion rumors after spending time together Thursday night, and now Gomez BFF Taylor Swift might be giving an old flame another shot. "X Factor" host Mario Lopez spotted Swift with One Direction's Harry Styles, her rumored crush from earlier this year, on the show's set Thursday as she rehearsed for her performance of "State of Grace."

Lopez shared the on-set intel with the world on his 104.4 MY FM radio show Friday night (November 16): "Taylor Swift was the special guest performer, and a little inside scoop for you: During rehearsals, Harry from One Direction came and slapped me on the back and said, 'Hey, Mario, how ya doing?' And I said, 'What are you doing here?' And he sort of [pointed] toward Taylor."

Swift and Styles even walked away "hand in hand," Lopez reported.

One Direction pick their favorite songs from Take Me Home.

The pair met at the Kids' Choice Awards back in March, where Swift and Gomez were spotted in the audience dancing to One Direction's "What Makes You Beautiful" and singing every word. Bieber then let it slip that he knew a big-time star with a crush on Styles but was "sworn to secrecy." Styles even got some knowing glances from his bandmates when Swift's name came up during an April interview with MTV News.

Check out the One Direction swag on sale at New York's 1D pop-up shop, over on the Buzzworthy blog!

Styles isn't the only 1D member followed by romance rumors: Niall Horan and Demi Lovato have shot down reports that they are a couple since the beginning of the year, insisting they're just good friends.

One Direction just released their sophomore album, Take Me Home, on Tuesday, and they're poised to top 500,000 in sales in the first week.

What do you think about Taylor and Harry as a couple? Share your thoughts in the comments!