There have been a lot of these threads lately. Some dude finds out about his girlfriend's past, he comes to us crying, and the response (typically from the women) seems to be: "you can't judge her for her past. It's none of your business."
I want to ask: why not?
Let's assume it's true, that your partner's past is none of your business. So, looking into it without their consent would necessarily be a violation of privacy, which would necessarily be immoral. But let's say you acquired the information by accident; would it be immoral to break up with them because of the information you gained? If not, why isn't it immoral to seek the information in the first place? (If it isn't clear why these are necessarily inclusive, just think about it a little harder.)
And at what point does it stop? If their past involved all of their partners mysteriously disappearing after a life insurance policy was made, wouldn't you want to know about that? This is an extreme case, of course, but it needs to be answered. Where do you draw the line?
Let's look at a less extreme case. I saw a guy around here that found out his girlfriend used to be a stripper. Of course, all of the estrogen flooded the thread within a few hours with, "wah wah wah can't judge past" etc. Fine; but what about a porn star? It's totally within your right to know these things. I would say it would be immoral for her to not disclose these kinds of things early on. If I date a 20-year-old, I want to know if she's been married before, or that the year prior she starred in 6 bukkake films, or whatever. That way, I can promptly say, "Let's just be friends. Also, can I get a signed copy of those films?" Despite all of the "just dump his ass" responses we seem to give people, we all know it's much easier said than done when you're emotionally invested in a person.
Lastly, how past is "past"? If I'm in my 40s and a woman I'm dating told me she did a few porn films 20 years ago, I'm going to feel differently than if she told me she did one the night before, but that "it was my last one. I'm retiring from the business", putting it into "past" territory.
I think what lies more critically here is whether or not people are capable of change. Is the person you were an hour ago the same person as you are now? Perhaps it's because I'm getting older and more bitter, but I'm inclined to think so. People very rarely, if ever, change. I've been trolling this place for a decade now; the only thing that changes is the trolls get more sophisticated and elaborate (and more spaced out, unfortunately, because of work/school).
Whatever gets decided in this thread needs to be the standard for how we handle these cases, because it sucks and isn't fair for only some people to get a reasonable response, and ultimately, for only some people beyond the forum to receive fair treatment.