OK! Exclusive: Emma Roberts & Taylor Lautner

Last fall, Taylor Lautner and Taylor Swift were Hollywood’s too-adorable class couple. This year? It’s Taylor L., 18, and Emma Roberts, 19 — his Valentine’s Day co-star and niece of Julia Roberts. “She thinks he’s the cutest thing ever," a source tells OK!.

"They met on the set, and there was an instant attraction,” our source continues.

Now both single, the duo is finally heating up. At Vanity Fair’s post-Oscar party on March 7, a witness says “his arm was around her waist and she leaned her head on his shoulder. They talked for 40 minutes, with her hand on his knee!”

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