My Wife Is a Vampire (2009)

This film is about a man named Scott Stevens, who just had the worst day of has life. But before the day is over he meets this kind and beautiful woman. They hit off and eventually fall in love and get married. Coincidentally a lot of strange things being to happening in town, the police keep finding many dead bodies. Scott's wife is always out at night and when he wakes up in the morning she's no where to be found. He's beginning to think two things about her.