What should I do is the question. I don't want to be lied to. (I've tried drawing a line but even when it is crossed I don't leave).
As for dealing with the jealousy I can keep it in. I'm not sure if that is a good idea though, but that is why I am here for advice. I tried searching online and the suggestions really didn't suit me (breaking up and sleeping around then getting back together)
I understand and dislike lying as well but at this point her lying may just be a coping mechanism considering you don't seem to deal with her sexual past very well.
If every time I answered you truthfully just to end up having you angry, moody, or jealous, I'd be lying too.
Trust me when I tell you no woman finds insecurity attractive.
You'll begin having problems in your relationship on other fronts as well.
I don't understand why at this point the two of you are even having discussions about her sexual past.
How does this come up enough to be a stressor in your relationship?
My advice on the best course for you take take this relationship on?
Assess who and what she is now, decide if she's a person you love, trust, and respect.
Consider why you respect her most of all.
Are your reasons objective or emotion filled?
Be as objective as you can.
If you decide she is a person you love, trust, and respect then deal with your issues and hers.
If you decide she isn't that person then find the least destructive way to end the situation.