Something I noticed about my first two DPs is that both spectacularly sabotaged themselves post split. I have no idea why since it didn't affect me at all. I had someone who went from decent predicted A-levels to someone who handed in a practical assignment with no ruled lines and dog's teethmarks on it.
My second one did similar - he had been genuinely ill but his academic grades went into a death spiral as all he did was play videogames and ignore his tutor.
It was almost as if they were competing with me when they went out rather than doing it for their own ends?
Anyone else?