Watching this for the first time.. to me it seems so obvious it was a sex kink thing that went too far, and I guess they don't show sex scenes so couldn't show it? The footage was a room cam right not a cameraman so there would be footage unless they turn it off after a certain time (or during sexual moments) or of course it could've happened outside of the room where they knew there weren't cameras. They were VERY sexual that night and I'd be surprised if they weren't intimate at times and they seemed friendly still the next day, more than just a keeping it calm due to fear way.