It is just four short lines

Something something or other,
And get closer to the tomb,
I find that I care less and less
Who sleeps with whom. (one or two words missing)

I thought it was Edna Saint Vincent Millay but I can’t find a Google reference for any of the phrases that I remember.
It was published around the time that same-sex marriage came up in the New York legislature but I am stumped every time I look for it.

Thanks to all

SRM