Parlez-moi d'amour (1975)

Emerging from a lengthy dinner where his mother was exhibited without restraint for the favor of a man, Daniel returns alone, sickened. Without imagining the trap closes on him, he later agrees to have a drink with a neighbor he just help carry packages. She "vamp" and keeps her house without a very fierce resistance opposes too happy to escape his solitude. Taking advantage of the absence of his mother, Daniel finally leaves the high school and moved to the neighbor who, having close to her more often, gets him a place in the clinic where she is employed.

Unfortunately the movie Parlez-moi d'amour is not yet available on HBO Max.