Billy Paul - Me And Mrs. Jones (1972)

I grew up with this song.  "mother's" best friend was edie who is white.  she was happily married to wayland who is black.  I surmise they married in the 40's or as soon as inter-racial marriage became legal in Maryland.  We were in Randallstown, Maryland and my neighborhood at that time was very diverse.  In Kings Park Estates we had the house until 1975, and in that neighborhood the word diverse took on a very positive connotation.  I saw no color.