Ever wonder how you've wound up with your spouse?

I love my wife. I've been with her for a large number of years. I take good care of her and she takes good care of me. I am faithful to her and she's been the same to me. So no complaints.

But sometimes I get this odd feeling, wondering how i wound up sharing my life with her. Yes, I know the history (no alzheimer's here), but it's just a strange feeling. A little bit like Deja Vu. Does that happen to other married people from time to time?