Tim McGraw - Diamond Rings And Old Barstools Lyrics Meaning

When I hear this song, I instantly think two barstools that they shouldn't be in. As in, two people who have moved onto new relationships (marriages) and still have the "what-if's" from the past. The past being that one a person they still care for, but just couldn't make it work at that time. One or both of them wondering if that is really where they should be.