First Andrew Sullivan mentioned it, then Jonah Goldberg and Virginia Postrel were shocked by it. The late Susan Sontag and world-famous photographer Annie Leibowitz were a couple.
Actually, they may have been a family.
Back in October of 2001, Leibovitz gave birth to a daughter (scroll down to second item). Which makes this comment a little more interesting.
But while NYTimes readers might be surprised by all this, Page Six readers aren't. I could have sworn I read about Sontag-Leibovitz several times in the Post. Unfortunately a search turned up only articles I'd have to pay to read, but I think I'm right: this time the low-brow Post was more forthright and informational than the Times.