I Will Return(2009)

Original title: So che ritornerai

Anna, owner of an electro-mechanical factory, has an affair with her best friend Lisa's husband, hunky Maurizio; realizing she got pregnant, Anna tries to end the affair and, during an argument, Maurizio dies in a car crash—swearing that he'll come back. His promise seems to be fulfilled five years later when, during a wedding, Anna recognizes her lost lover in groom-to-be Tom.