Earlier today, Paramount revealed the first image of Ivan Reitman’s upcoming romantic-comedy, No Strings Attached. Now, only a few hours later, Paramount has released the first trailer for the film.  The film stars Ashton Kutcher and Natalie Portman as two friends who decide to begin a “no strings attached” (hence the title) sexual relationship.  You can probably guess all of the film’s beats and how it will end by watching the trailer, but I’m sure that the same people who have turned up for all of Kutcher’s past romantic comedies will be showing up for this one as well.  No Strings Attached opens on January 21, 2011 and also co-stars Cary Elwes, Greta Gerwig, Ludacris, Kevin Kline, and Olivia Thirlby.  Hit the jump to watch the trailer.

You can go to Moviefone to watch the trailer in HD.

“Natalie Portman and Ashton Kutcher play two friends who agree to start a casual fling, thinking they can do it without any emotional baggage. Sounds easy enough, right? Sure -- that is, until love gets in the way.”

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