Lots of sex, prostitution, no nudity.
Dena and Byron are in bed together kissing, clothed. Byron moves under the blankets and oral sex is implied through Dena's facial reaction.
Explicit sexual paintings are shown with full nudity, intercourse, and genitals.
Lots of discussion of male prostitution and women handing money to men.
Naked men are shown during an experimental theater performance. Due to angles no actual nudity is shown.
Byron is shown presumably giving oral sex to a client, Andrea. Her husband, Alcott, interrupts and they have a conversation together.
Byron is again shown having sex with the Andrea and Alcott pops in quickly to make a comment. No nudity.