You seriously shouldn't judge someone on things in their past. You don't like being judged, so why do it. I lost my virginity at 13, I know I should have waited longer.. but I didn't. That's not who I am.. but it is apart of me. She is 19, you weren't dating her, or with her... etc when she lost it. Are you a virgin? If your not, how can you look shameful on her. Get over it, it's the past. If you don't like it... then move on.