There was a lenthy thread here about Ed's lover when he was running for mayor. When he was elected Ed told him to get outta town. Several years later when he guy came back to New York, he was unable to find a job in his field.
R1 is correct. Watch the documentary Outrage (which is about closeted politicians)for more info. I'm blanking on the boyfriend's name right now but he was a nice-looking guy.
Although Koch was a major closet case, when he was in Congress, he and Bella Abzug introduced the first gay rights legislation ever put forth on Capitol Hill.
Bess Myerson was his beard.
He was no loss.
"About a year or two after I got to know Dick, he said he had something he wanted me to know: Over the course of a couple of years, he had been lovers with Ed Koch, and after they broke up, Ed had made it impossible for him to work in New York. No instance of homophobia hurt him more than the treatment by the man he was in love with ... Dick was worried about his safety. And Dick did feel that if he went public, he would suffer."
-- Frederick Hertz, trustee for the late Richard Nathan, in the 2009 film Outrage