The Marrying Man (1991)

Rich playboy Charley Pearl meets singer Vicki Anderson at a nightclub in Las Vegas. But she's a gangster's moll--Bugsy Siegel's--and when he finds the two of them in bed, he forces them to marry each other. Charley was going to marry his girlfriend, but when she finds out about him and Vicki, she leaves him. And Vicki doesn't seem to be his kind of woman at all.