[Tonchi]

Anybody who would come right out and ask a woman how many men she has been with does not deserve an answer. That should be a huge red flag to you, and you can bet that if you are stupid enough to talk about your history to him, you are going to regret it. Another red flag is if he persists in asking "Am I the best you have ever had?" or "Who was the best lover you ever had?" Lose him, no matter what your answer is you will never hear the end of it.

Of course it is different if you are with your life partner or, at the least, with somebody who knows you so well in every other way and shares himself with you and not just his "free time". When a person has been with you for a while and you have some "history" of your own together, he or she will come to talk with you about past experiences as a matter of course, and it will not be an inquisition. Even then, each person should have the right to their privacy if they choose to invoke the privilege. If you are sleeping with somebody and do not even have a clue whether they did the entire Seventh Fleet, you might have other things to worry about. But otherwise, let it be.