I agree with posters here about Dianne's behaviour during Strictly. I feel like she put a lot of pressure on herself as Strictly and similar shows were seen as 'keeping people going' so there was kind of that all or nothing mentality. No doubt the producers were also piling on the pressure. It's one thing being on a prime time show to start with, but being on that show and knowing that people have nothing else to do but watch must be terrifying. Plus the bubbles, her and Max had to spend ALL the time together and that is hard work in itself, whether they got on or not. The crying could have been purely from frustration, added of course to the fact she had to be away from Joe and she hadn't been able to see her family for almost a year (at least) at that point, something has to give somewhere. Of course, the only thing that regular viewers would see is her crying because she was 'annoyed' at Max. Which would have been a tiny contributing factor, see also: the straw that broke the camels back.
I think the Joe/Zoe saggy skin thing could be genetic. I think their mums is the same. Can be related to the extremely fast metabolism which is why he's trying to eat more and gain weight. (Sorry for the OT, I just like Dianne....don't shoot)