I know what you mean about it just happening the one time - I feel like that would be all they'd NEED to realise that it was either a terrible idea, or so good that it would cause too many complications. I think it would just be such an intense experience that it might freak them out and they'd be too afraid to do it again.

UGH I KNOW RIGHT, I feel really bad for finding their performances boring now because they're obviously still massively talented and it's still entertaining, but I used to be able to sit through whole concerts and be like glued to my screen because the tension between them was so captivating. :( They need to get that back.