I'm your best friend since childhood and we go to the same school. I was in class from a very young age we are both 16 years old... We are taking class the History, while you're in the front seat an hour passed and about 5 girls took you out of the room to take you to the bathroom while I notice that there is a bloodstain on the seat you are sitting on. Not knowing that this was menstruation, I wiped it with paper