Taylor Lautner and Taylor Swift looked every bit a couple at KIIS FM's Jingle Ball in Los Angeles on Saturday, it's been reported.

The rumoured love-birds are understood to have hooked-up backstage at the Nokia Theatre, where Swift was performing.

A source told E! Online Lautner went straight to Swift's dressing room when he arrived at the venue and “once inside, the two definitely seemed like a couple”.

The 17-year-old actor, who shot to fame as Jacob Black in The Twilight Saga, is also thought to have chatted to Swift's mother backstage.

"Taylor's mom was constantly smiling around him,” the source added.

Lautner has been repeatedly linked to singer Swift, 19, since the pair shot forthcoming movie Valentine's Day.

But both stars have so far failed to confirm reports they are dating, with Swift simply admitting that she found Lautner “cute”.

The Twilight star, meanwhile, told Rolling Stone that the pair were “close”.

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