“Limited Partnership”, directed by Thomas G. Miller (actually a physician, according to the QA), tells the story of a male couple which started a relationship in California in 1971 and has followed history for forty years. This is a love story (as much as the 1970 film called that).
A key event was the US Justice Department's ruling in the late 70s that the federal government would not recognize them as married for immigration purposes, as expressed in notorious the letter referring to them as "faggots".
The film was shown at FilmfestDC at Landmark E Street, before a nearly sold-out audience in a large auditorium. Miller and Sullivan were there for questions. Sullivan mentioned that libertarians were better on marriage equality than many Democrats, and attributed many anti-gay attitudes of the distant past as indirectly related to propping up heterosexual marriage itself.
My own take on this is to put the film inside a much bigger context. Had I met a "Tony" in 1973 (after my own "second coming"), could I have even created and maintained such a relationship, given the external adversity? That's its own kind of courage. Could I have supported someone financially because he could not get a green card? The moral scope of a question like that grows quickly. If might even affect political asylum (as from anti-gay countries) today.
A good comparison for this film would be "Documented" (May 30, 2014 here).
This new film would almost certainly have played at the West End Cinema in Washington if it were still open.