Because I Said So, starring Diane Keaton and Mandy Moore, is a movie about Daphne, Keaton, with three daughters who is as over-bearing, meddling, and annoying as any other mother is. She trys to set her daughter Milly, Moore, up with a boyfriend that she finds online so Milly wont end up with the same fate as her- divorced and alone.
Daphne met up with some of the guys she found online and only one of them met her standards, Jason. But then the man playing the guitar at the restaurant, Johnny, didnt so she didnt like him. bu snatched Milly's business card so he could meet her.
So Milly ended up dating both of them at the same time without knowing that her mother put an ad on the interent. When she found out she was furious at her mother & made her mother realize that she couldnt meddle any more. Milly broke it off with the Jason & stayed with Johnny.

http://www.imdb.com/title/tt0490084/