Justin Timberlake Dishes On Making Out With Ex-Girlfriend Cameron Diaz In ‘Bad Teacher’

Justin Timberlake gets down and dirty with Cameron Diaz in their upcoming comedy, “Bad Teacher,” and although the sexy pair dated off-screen for nearly four years, Justin says filming the physical scene with his ex wasn’t at all awkward.

“I didn’t look at it like that,” Justin told Access Hollywood’s Shaun Robinson of the raunchy reunion at the film’s junket in Los Angeles on Sunday. “We obviously know each other, but I looked at it as a really funny, funny scene that I’ve never seen done before.”

While getting back in the action with Cameron may not have been strange, the “SexyBack” singer said filming closeups – by himself! — for the steamy scene was brutal.

“What I actually remember was, you know, they got to my closeup for that scene, so I was just kind of by myself — which is hard to imitate in real life,” Justin told Shaun with a laugh. “Jake [Kasdan], the director, kept yelling out, ‘OK, more contorted! Uglier face! Flare your nostrils! Curl your lip up…more!’ And I’m trying not to laugh.

“I saw it [played] back one time and I’m really emotionally damaged,” he added.

In addition to his tremendously successful music career, a starring role in 2010’s critically acclaimed drama, “The Social Network,” and establishing himself as a perennially hysterical “Saturday Night Live” host, a racecar sponsored by Justin’s clothing line, William Rast, won the Indy 500 last week.

“I’m a lucky guy… I feel very lucky to have these opportunities to wake up to everyday,” he told Shaun of his seemingly unstoppable good fortune. “You take a job like ‘Bad Teacher’ and it’s like, ‘Wow, I’m going to get to work with all these people that I admire… and I’m going to get to be a part of it.’

“I just feel like lighting kind of keeps striking for me,” he continued. “So, I must have done something crazy good in a past life.”

Catch Justin, along with Cameron Diaz and Jason Segel, in “Bad Teacher” – in theaters on June 24.