Movies like Valentine's Day

Detective Jack Valentine is reinstated from his desk job to go back onto the streets. His first assignment ends with the death of a mobster who was about to turn states evidence. The killing came as the mobster was with his girlfriend Alma. Jack suspects Alma of being involved - even more so when he finds her involved with one of the mob family, Michael. However he begins to fall for her himself and finds himself involved in the deadly game where not everything is what it seems.