Wedding Night - End of the Song (1992)

For most people, a wedding signifies a hopeful beginning, but then, Catherine and Christian aren't most people. She is a spoiled rich girl with an insatiable desire for the low and degraded side of life. Christian is without any resources, inner or outer, and caters to Catherine's every whim, even when she sends him out in the middle of their wedding reception to score some heroin for her. Their wedding is the starting point for their relentless downward spiral into the most brutally senseless lives imaginable, in this stylishly filmed exploration of the dark netherworld of the human spirit.