In the recent years I have been very closed off and could not be sexual, I am learning still it can be nice and not offensive. My encounter for my last child was strictly to reproduce. It just still leaves a "dirty" feeling; I am as I said before here learning to still get rid of it and be open with my husband. Some damage can be hard to shake.
PTSD undiagnosed and totally out of control I had no problem. I was a stripper and knew how to play into any and every fantasy. And did. Hell, it is how I got my husband nuts for me now and we still work on that was not the real me, luckily he loves the real me. I was intoxicated most of the time to handle it but I was prime for clubs, working where ever and when ever I wanted and turned down a Houston billboard in my younger years. I was very sexual and made a living (damn good one) being that way. This is NOT a good thing and was just self destructive and would love to see every strip joint closed as there is no thing as an emotionally healthy dancer. And no, I was never a hooker. Did not go that far, I was just another person once I entered a building.
I think my medication fat I gained, chopping off hair, and age did me a favor as I have no "easy out" now. PTSD doing a major blow up actually saved me from returning to that. I can only dream to have your issues and would with so much pride.
I would not be so quick to tell a new friend about PTSD, but let them know later after they know your personality and you know you are compatible. Also, I do not think virginity should be brought up as first talks do not include how many you have slept with! It is another later issue, but one you can say with no shame.