Witnessing my partner engage in sexual activity with a security guard on duty

I was walking around my dorm when I saw my girlfriend talking to a security guard. I didn't think much of it, but then I saw the guard's hard cock growing in his pants. I knew what was going on, and I couldn't believe it! My girlfriend was giving that guard a blowjob right there in the dorm! I was so shocked and excited at the same time. I decided to watch and record the whole thing.The guard was really into it and my girlfriend was doing a great job. She was sucking his big cock like a pro. The guard was moaning and groaning with pleasure. I couldn't believe my eyes! My girlfriend was really getting down and dirty with that security guard. It was a sight to behold.After a while, the guard decided to take my girlfriend on the office desk where he continued to fuck her. I was watching everything from a distance, but I couldn't take my eyes off of them. It was a wild and crazy experience for me.