La bête à plaisir (1975)

A young guy, Gilbert, who I really liked, is going through a bit of hardship, with his frigid goody goody wife, and this as you'll see has been causing him much frustration. Thank god for Barbara, a loud, adventurous older woman, much more experienced, in the ways of sex and love, but mostly sex, who isn't 'fraid to experiment, and try many positions.