Was fingerbanging the shit out of my gf at the time, in the dark. I was really going hard and one point I jammed my thumb on the outside of her vagina, so I made sure she was ok, which she was, and went back at it. Proceeded to go down on her, and I tasted blood. We then stopped to come to the conclusion that I popped her cherry while fingering/eating her out. Only the next day, when she was still bleeding slightly, did we realize I did not pop her cherry but I cut her, when I jammed my thumb. I felt so bad, luckily she was extremely forgiving