Jennifer Lawrence Gives a 'Hard No' to Dating Justin Bieber, but Talks Frenching Bradley Cooper

The actress went into great detail about kissing Bradley Cooper.

Jennifer Lawrence isn't so keen on the idea of hooking up with Justin Bieber.

Bieber told Capital FM back in November that he found Lawrence "sexy," but the outspoken Oscar winner did not return the compliment when she spoke with Andy Cohen on Monday's Watch What Happens Live. When asked if she'd ever consider getting together with the 21-year-old heartthrob, Lawrence answered, "I'm going to say hard no."

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The 25-year-old actress was, however, more than willing to gush over her off-camera makeout session with her Hunger Games co-star Liam Hemsworth and locking lips with Bradley Cooper in four films.

"When you kiss Bradley Cooper in a movie, tongues happening?" Cohen asked. Lawrence admitted that she does french kiss her co-star -- who's appeared with her in Joy, American Hustle, Serena and Silver Linings Playbook -- but wasn't sure if that was acceptable behavior.

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"That's normal, right?" she quipped. "Or am I, like, a perverted co-star?" She added that he was a "fantastic kisser."

Despite the onscreen friskiness, Cooper made it very clear when he was on Howard Stern's Sirius XM radio show that he would never hook up with Lawrence off set. "It just didn't happen," he said, clarifying that he and Lawrence would "never" sleep together. "It's not the way we are together."

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Cooper does have his co-star's back. Check out what he told ET after Lawrence penned an essay about equal pay in Hollywood: