My husband didn't want to know anything about my past, whereas I grilled him about his. It's reversed for us, I guess. But then again, our situation was a little different.
I've always seen the girls I know wanting to know about their man's past, and the guys are just like "whatever." It's weird.
I mean, he knew basics and stuff. After all, I've been friends with him since I was 14, so it was almost impossible for him not to know. But he didn't want a detailed description of who I dated, what they looked like, etc. Stuff like that, unless it affects the current relationship, should just stay buried.