Think about this. Public sex clubs like ‘Plato’s Retreat’ and gay bath houses were mainstream in the 1970s. Bette Midler got her start performing at a gay bath house. There were porn theaters catering to couples all over the place. AIDS came along and threw everything back fifty years.
I once read a novel from the 1970s. There were a couple of thugs who were arguing over who’d had more STIs. It was a simpler, happier time.