How did so many couples get to a year plus and never discuss previous partners? Some of them really seem to not want to know, which partially explains it, but a lot of them are just like, "Oh, yeah. I forgot I slept with more people than I could ever count."
I do remember an ex telling me they couldn't remember the number of people they'd slept with and being kind of floored by that, but, the longer you live...also, about a week later he drew my attention to an Apple commercial he liked and it happened to star one of the people I'd slept with! A smaller number, but more widely publicized on broadcast television.
Really, even one other person can be too many if you spend a lot of time thinking about it. As that one lady who really doesn't want to reveal her number says, "The past is in the past."