1989’s “When Harry Met Sally” is apparently a major influence on “Sweethearts.” Director Jordan Weiss not only has the movie prominently featured on a theater marquee in the picture, but she also includes full scenes from it during the final act. She must be a huge fan, and there’s an effort to channel some of that cinematic energy into “Sweethearts,” which also explores the strange friendship between a young man and a woman who team up to deal with relationships they don’t want. Weiss (who co-scripts with Dan Brier) doesn’t exactly have the same level of wit and warmth as Nora Ephron, but she manages to overcome a dispiriting opening act to find comedic balance worth sticking around for. Laughs are limited, but performances shine in the endeavor, as the actors eventually get the hang of these personalities and their unusual fight for freedom. Read the rest at Blu-ray.com