SAN FRANCISCO, California (AP) -- Author Terry McMillan has filed for divorce from the man who inspired the 1996 novel "How Stella Got Her Groove Back," which chronicled the romantic adventures of a 40-something woman who falls for a guy half her age. In papers filed in Contra Costa County Superior Court, McMillan, 53, says she decided to end her 6 1/2-year marriage to Jonathan Plummer, 30, after learning he is gay. The revelation led her to conclude Plummer married only to get his U.S. citizenship, she said. McMillan met Plummer at a Jamaican resort a decade ago.