Rashida Jones: "Celeste and Jesse Forever" conveys real-life relationship phenomenon

(CBS News) Rashida Jones not only co-stars in the new romantic comedy "Celeste and Jesse Forever," she co-wrote it.

The movie is about a young couple in the midst of a divorce who attempt to maintain their friendship while pursuing new relationships.

Jones said she's seen this kind of scenario often play out with her friends. Thursday on "CBS This Morning" she said, "I have a lot of friends my age that are doing this thing, where they have long-term relationships, they loved each other, it's their first adult relationship and they're realizing that they're growing apart, but they don't want to lose each other because they're friends first and foremost.

"They try to do this negotiating, this bypassing of the inevitable pain of separating or changing the way your relationship looks. And they fail. You know, it's kind of about how they fail. But this is a phenomenon that seems to be really prevalent with my friends. They really do try to create some sort of like middle relationship that's not together and not not together."

Though Jones co-penned the movie with writing partner Will McCormack, writing did intimidate her. "I've now been in the business for 15 years and read a lot of scripts and some are incredible and some are less than incredible," she said. "I just wanted to take a shot and see if I could do it."

For more with Jones - including talk about her famous parents music mogul Quincy Jones and actress Peggy Lipton, her Harvard background, and how she made her first forays into acting - watch the video in the player above.