Hm. What if it’s three people at once? First one opens up, what do the other two do? The 2nd person can read the reaction of the 3rd to the 1st and mitigate negative reactions that way, and the 3rd has the benefit of witnessing two confessions and reactions.
But only the first can have the benefit of either being completely honest, lying, or whatever they choose, as the first becomes the baseline with which the others are judged. I find multi-people dynamic interesting