Movie icon Elizabeth Taylor has exposed her first husband, CONRAD HILTON JR, as a "cruel" drunk in a new magazine interview. The actress was a teenager when she exchanged vows with the hotel heir in 1950 and was so smitten with the handsome socialite she studied Catholicism to be his wife. But she admits she never took the union seriously enough and divorced Hilton, who is the uncle of PARIS and Nicky Hilton's father, nine months later - after discovering he had a drinking problem. Revealing all in a candid new expose with Interview editor INGRID SISCHY, the actress recalls, "When I got a divorce... I never told the court why, but he was cruel. "When he drank it all came out, and I hadn't seen that before because he was on the wagon the eight months we were engaged. I didn't have a clue. But I thought, 'This isn't why God put me on earth.'" Taylor, who wed another seven times, had an inkling her first marriage wouldn't work out as she stood before the archbishop on her big day. She adds, "When I had to swear in front of the archbishop to be a good wife and all that stuff, I had my fingers crossed behind my back because I didn't know if I could be a good wife."