I was Cipel's lover... ...and he's still in love with the gov, says prof BY RALPH R. ORTEGA, ALISON GENDAR and NANCY DILLONDAILY NEWS STAFF WRITERS The mystery man who claims to be Golan Cipel's ex-lover said yesterday that not only is the handsome Israeli gay - he's also still in love with Gov. Jim McGreevey. "Golan says he's not gay? He could have fooled me," Dr. David Miller of Livingston, N.J., told the Daily News yesterday, as he claimed that he had a gay affair with the ex-McGreevey aide. "We love each other. Is that a crime? We're...