This was originally recorded on VHS and the quality is poor and some of the video is lost in the transfer.
We had to do two auditions to get selected to be on the show. And the day of the recording they put the four of us couples in a dimly lit room and served us food. They played romantic music to set the "mood". And then they marched us out to the set. Each couple had a "doberman" assigned to them to watch and make sure they weren't cheating. The soundproof room is definitely soundproof, and then on top of that they make you put on headphones that play loud music.