Hollywood seems to like no-strings sex at the moment, with several movies and a TV series having been developed based on the idea of people trying to be friends with benefits, but finding it tougher than they expected when they begin to have romantic feeling for one another. The first film based on the idea to actually get in the can is No Strings Attached, which stars Ashton Kutcher and Natalie Portman as the duo initially looking for simple sexual release, whose relationship gets increasingly complicated. However the film has competitions next year, as while this is heading for a February 11th release, the very similar sounding Friends With Benefits, starring Justin Timberlake and Mila Kunis, will arrive in July. Click below to watch the first trailer.