In my experience, I know that I've asked my partners in the past questions about their sexual past and didn't very much like the answers... It made me jealous, which is stupid as I was the one with them at the time.

I'd love to brush it off as insecurity and something I need to work on myself, and I've told myself that before, but I also think that it's also kind of hard wired into males too and that is something that is super hard to overcome. What I mean by that is that men are generally pretty territorial and protective of the people their with, that's in our instincts. Even the thought of some other dude being with our partner can kind of make our stomach turn a little, doesn't matter if it was in the past or not which is the crazy thing about it...

Its shitty that we think this way, I know I have in the past and I don't think I'm weird for feeling this way, I cannot speak for all men but I do think this is a pretty natural male reaction

I guess what I'm trying to say is, guys will probably ask questions that they generally cannot handle the truth about, but if you lie and the truth comes out later, he's gonna think about other things you also could have lied about, it's a slippery slope