The Bodyguard

The Bodyguard is a 1992 American musical romantic drama movie starring Whitney Houston and Kevin Costner. 
Although the movie got mixed reviews from movie critics, it did very well at the box office and it became a cult movie.
Plot.
Houston stars as Rachel Marron, a very successful and popular singer who is the target of an assassin. Costner stars as her bodyguard, who she hired so that he protects her from the assassin. A romantic relationship develops between the two characters.