The bad old days for being gay included institutionalization, treatments and the search for a “cure.”

This period piece comes from the producers of “Call Me By Your Name,” with Finn O’Shea and Robert Aramayo as the young lovers, and Erin Kellyman as the nurse “date” who takes it all down.

All part of the treatment, you see, in writer-director Will Seefried’s retelling.

“Lilies Not for Me” streams April 4.