We have to wait for the midth century before we get something made explicit, but along the way there are one or two intriguing depictions which make you wonder, operas by Kurt Weill, Szymanowski and Verdi, not to mention the lively double entendres in Cavalli's oeuvre. John Travolta had six-year gay affair with his pilot, claims star's former secretary.Share your thoughts and debate the big issues.Straight people don't exist – so why do half of bisexual men fear coming out?.