I'm sorry we can't give you the answers you'd like to hear. I truly cannot understand how you can feel the way you feel for being a virgin and the need to compete with your sister. Most siblings do make fun of each other, but to be honest my brother and I would never speak of our sexual past. Why the hell would I want to know who and how many people my brother has had sex with? That's gross. My brother would never come up to me and ask about my sexual history, and I believe most siblings wouldn't discuss their sexual history with each other. How on earth could this be a competition to be had with my sibling?

And I'm not trying to think of you as an alien, I just don't understand your thinking.