DEAR ABBY: A couple of months ago my husband and I received a very nice "save the date" for a wedding in August in a town nearby. There were many nice photos of the engaged couple on the card. The problem is, we have no idea who they are.

We called our families to ask if they had received one too, thinking maybe it was a long-lost relative. I even went so far as checking social media, thinking we might have friends in common, but we don't. I'm hoping the actual invitation may offer more clues, but I don't think it will.

While this was clearly addressed to us, my fear is that it was intended for someone else who may not be "saving the date" and it may cause some tension within their family. What would be proper when the invitation arrives? Do I check "will not attend" and send it back, or should I include a note with an explanation? -- SAVE THE DATE IN WISCONSIN

DEAR SAVE THE DATE: You are a nice person. A simple "regret that we cannot attend" should be sufficient and by all means include the note.