Reddit, I was watching porn thinking there's nobody in the room, but roommate was right behind me on his bunk bed. What do I do?

I stopped when I heard him move in his bed. In the meantime I watched like half an hour of hardcore and lesbian porno. I heard noises while I was watching but I thought it was movement from the next room. What the fuck do I do now? :/

He didn't say anything yet. That even more embarrassing.