As one might imagine, Russo got over her nerves pretty quickly. And yes, the Biebs is a good kisser.

"Kissing him was nice—I got butterflies and I do still to this day," she says. "After the shoot wrapped it felt so surreal, I even got a speeding ticket after the shoot because I was on such a high. I guess you could say I wouldn't mind doing it again."

Russo adds that Bieber, 19, "smelled really nice" and had "really fresh breath" all day. Phew!

"I thought they made me look way classy and not trashy at all, and I was happy with how Justin and I interacted," she says. "It didn't come out like we were shoving our tongues in each other's mouth or anything weird like that at all."

In between takes, Bieber and Russo hung out on the singer's tour bus and listened to his new music.