It doesn't determine whether or not you're a virgin any more than your toes do. If you're having P in V sex, pregnancy is possible the first time.
A virgin is someone who's never had sex but it's not quite as simple as it seems. A lot of people think that having penis-in-vagina sex for the first time is how
How To Have Sex? I'm A Virgin, Help! (My First Time Having Sex!) I'm pretty sure this is a question that most virgins (not in a bad way) ask