Walk-in: Caught My Roommate Fucking My Girlfriend

I came home early from work, expecting an empty apartment. Instead, I found my roommate balls deep in my girlfriend, her legs wrapped around his waist as he pounded her on our couch. She screamed in pleasure, oblivious to my presence. I stood there, shocked and furious, as he filled her with his cum. When he finally noticed me, he just smirked and kept going, determined to finish what he started