'No Strings Attached,' the new romantic comedy starring Natalie Portman and Ashton Kutcher, follows two exceptionally good-looking people who agree to start a "friends with benefits"-type fling. But before they know it, that little crazy thing called love gets in the way, and their confidence in this genius plan begins to deflate.

In our exclusive clip from the sexy movie, things get pretty awkward when Adam (Kutcher) shows up at Emma's (Portman) job unexpectedly ... and with balloons. That's what friends do, right? Wrong. Emma quickly rejects his gift and reminds him that being in a relationship -- which she compares to having a peanut allergy -- just isn't her thing.

Check out the clip after the jump, then be sure to see 'No Strings Attached' when it hits theaters on Jan. 21.