<human>: Can you condense the text into a few key points?

Hey! My girlfriend is having a sleepover tonight. Yes, without me. With who? Apparently, it's a group of 10 people, with blended genders.

Thing is, my girlfriend was and is one of these *nice* girls, who doesn't fuck around with whoever she sees, so she's not one of those. However, I can't help but feel a little worried that she's about to do it with another guy during this sleepover.

I guess my real question is: How usual is it that sex occurs during sleepovers? As mentioned, my girlfriend isn't the kind of girl that just parties all the time and has sex with everyone.

Our relationship is about a year old.
<bot>: Girlfriend is about to have a sleepover with 10 others, some of which are guys. Is she about to get it with another guy?