TBLP a hot seller among single women?

I’m not sure what to make of this, but for the last few months, on Amazon’s hourly bestseller update lists, TBLP has been lurking in the middle of the pack of the Women’s Fiction/Single Women bestseller list. I just noticed that at the time of this post, TBLP had slipped up into the #2 position. It’s often in the upper reaches of the political fiction list. But I’ve never really considered my novel to be of particular interest to women, let alone to single women. I’m not complaining. I’m just a bit befuddled by it. Who knew? Any thoughts?