SEATTLE - Mary Kay Letourneau and her former sixth-grade pupil — the father of her two youngest children — will be married Friday night, "Entertainment Tonight" and "The Insider" reported Thursday. Tents were being set up Thursday afternoon for the ceremony in a secluded spot in King County, according to the television programs, which obtained exclusive rights to cover the event. A rehearsal dinner for bridesmaids, groomsmen and relatives was planned Thursday. Letourneau, now 43, served 7 1/2 years in prison after she was convicted of raping Vili Fualaau, now 22. She was released last August. The couple first met...