Waitress (2007)

Jenna (Keri Russell) works in a diner in a small Southern town and is a genius at creating luscious desserts, but her marriage to an overbearing lout (Jeremy Sisto) makes happiness impossible. When she discovers she is pregnant, she makes plans to skip town before her condition is obvious. However, she begins an affair with the new town doctor (Nathan Fillion), who is the only one who knows her secret.