My sister Kate, her wife Alena and had a lot of conversations, on the phone and via text, in the days after the first ovulation cycle. We talked about what we wanted to get up to during the next ovulation cycle. One thing we settled on pretty immediately is that this stuff, as much fun as it was for all of us, should be a "special occasion" thing during ovulation. I think we could all see how much we might get dragged down into doing this all the time, and as much fun as it was, we were worried about our relationships, and, frankly, how all-consuming it could be.

We...