(Photo Credit: Vince Bucci/Getty Images)After 25 years together, singer Richard Marx and his wife, actress Cynthia Rhodes, are divorcing.Katie Couric first broke the news on " Katie" Friday, when she announced that Marx was "back on the market."Marx's rep confirmed the news to Us Weekly, which reported that the couple separated in July and are in the process of divorcing. Richard Marx Has 'Stories to Tell' The singer's rep did not respond immediately to ABC News' request for comment.Marx, 50, is best known for his popular '80s and '90s ballads, such as "Right Here Waiting" and "Hold On to the Nights." Rhodes, 57, found fame in the '80s for her roles in "Flashdance" and "Dirty Dancing."The pair met in 1983, while Marx was working on the soundtrack for the film "Staying Alive," in which Rhodes played John Travolta's love interest.They later married in 1989 and became parents to three sons, Brandon, 23, Lucas, 21, and Jesse, 20. 1980s Music Stars: Then and Now Marx, who has since wr...