Greg responds...

I mean, the simplest answer is that not every high school relationship lasts into adulthood. Frankly, the fact that we had two couples that did, is already a bit of a stretch. I know it happens - I have an in-law who's married to her high school sweetheart. But most of my friends and relatives are not still coupled with the folks they were happily seeing in their early teens.

If you're looking for some BIG REVELATION as to why they broke up, I don't know that I have one that would satisfy you in a forum like this. It's a story to be told someday. Or a set of stories, really, involving both what brought them together and the many factors (small and large) that ultimately broke them up. I have a notion as to why Dick is a serial monogamist, and why it took someone like Barbara to finally nail him down. And I have notions as to what's going on in Z's love life, as well.

It should be obvious that Dick and Z are still friends, still on good terms, even still attracted to each other. But they've moved on. It's okay if you still mourn that ship, however. I certainly see its appeal. And, in any case, everyone's mileage varies. But we try to let our characters tell us where they're going. And this is what they told us.