Love and a .45 (1994)

Watty Watts (Gil Bellows) has made a living out of robbing convenience stores, but after one of these jobs turned into murder by his partner, the psychopath Billy Mack Black (Rory Cochrane), he is on the run with his fiancé Starlene Cheatham (Renée Zellweger) and with both Billy Mack, the Police, and some loan sharks on his trail. Their plan is to go to Mexico, but before they do that, they want to get married and visit Starlene's parents.