I was a teen in the 70s and don't recall any methods of control of 'these things'.
Maybe you are thinking of the 50s, when they wired gay men to electric shock machines and zapped them while showing them pics of naked men. I wish you luck with that.
( It didn't work.)
You can still be happily married and have fantasies of many sorts, just don't act on them if you consider them immoral.