The Marrying Man (1991)

Charley Pearl wealthy heir and gadabout is slated to marry Adele the daughter of a Hollywood tycoon But during a wild bachelor party in Las Vegas Charley strikes up a flirtation with nightclub crooner Vicki Anderson that soon leads to her bedroom When the couple are discovered by Vickis beau infamous gangster Bugsy Siegel he makes a surprising pronouncement theyd better marry or Charley is a dead man