No Strings Attached is a 2011 American romantic comedy film directed by Ivan Reitman and starring Natalie Portman and Ashton Kutcher. Written by Elizabeth Meriwether, the film is about two friends who decide to make a pact to have "no strings attached" casual sex without falling in love with each other. The film was released in the United States and Canada on January 21, 2011. Wikipedia
Shira: (to Emma) Can I say something? And don't take this the wrong way because you know I'll be your friend no matter what. You've been kind of depressing to be around lately and I might start avoiding you in the hallway. Just thought you should know.