My step-sister found me with my girlfriend in a compromising position

I was in my room with my girlfriend, and we were getting a little too wild. We were making out and stuff, and then she started giving me a blowjob. I mean, she's my girlfriend, so that's not really a big deal. But then my step-sister came in and caught us in a pretty compromising position. I mean, I didn't know she was coming over, but whatever. She was pretty pissed off, I guess, because she started yelling at us. I mean, I don't know what she expected us to do, you know? We were just hanging out, man. But anyway, she kicked us out and stuff. I mean, I didn't really care, to be honest. I just wanted to get back to fucking my girlfriend. So we went back to my room and started doing it again. This time, though, we cranked it up a bit more. I mean, we were both pretty turned on, and we wanted to take it to the next level. So we started doing some pretty hardcore shit. I mean, we were fucking like animals, man. It was pretty intense. And then, when we were done, I came all over her face.