I can understand how you feel. My boyfriend is 9 years older than me and has been through a lot in his life: including near-death experiences, going to prison (it was for drug charges... Don't want you to think i'm holed up with a psycho or something. Lol), being married and being, well, a ladies' man. I, on the other hand, had only had one sexual experience before I met him, and that was something that happened against my will.
I've asked him a lot about his past before, and he's always answered. But some things, the things I know deep down that I don't want to hear, I leave alone. My reasoning is this: I didn't know him while he was dealing drugs or while he was dating all these women. I know he doesn't have stds, and I know he doesn't have children, and that's good enough for me. Anyway, what he did before we met really has no bearing on our relationship now, because we didn't even know each other existed.
It would be unfair of me to judge him on how many sexual partners he's had or how many he's had at one time, even. I don't ask him to compare me to his past partners because, well, that's stupid. And he tells me good things anyway. I know he might be lying to make me feel good about myself, but I don't care because I know he's happy and he loves me. So what if some other girl gave him a better blow job? Who's he with now? Me.
These might not be the same questions you're thinking, but the logic still applies. Unless it's something horrid that might be repeated (like cheating or abuse), just ask yourself... Does it really matter? Is there anything you can gain from her answering that specific question? I doubt it. She's with you now, and she loves you, and you can't mull over what she may or may not have done before you were together. It's only what's happening now and in the future that's important now.
