I didn't know, sez gov's ex 2 hours, 43 minutes ago BY MAGGIE HABERMAN, DAILY NEWS STAFF WRITER The first wife of New Jersey Gov. Jim McGreevey said yesterday she didn't know her ex was gay until last week. "He told me just before he went on TV," Kari Schutz said in a phone interview from British Columbia. Schutz described the call from her ex-husband as "difficult," although she declined to give details. But asked if she had any idea of her husband's sexual identity during their marriage, she said, "I never knew." The governor's second wife, Dina Matos McGreevey,...