The Conformist (1970)

Bernardo Bertolucci's early masterpiece is surprising in having a closeted homosexual (technically bisexual) protagonist (played by the not unattractive: Jean-Louis Trintignant) and a lesbian side story. Well I guess it was made in that free lovin' late 60's era, though the plot covers the 1930s. The visuals are astonishing. Based on a novel, the end is also a bit of a surprise/stunner.