For me it was the forgetfulness of things he had said - alcoholic blackouts. Also, insisting that he had cut down his drinking when there were still 12 bottles of vodka in the recycling......he insisted that they got knocked over......by the cats!!!!!! Also he tends to show me one bottle, indicating he has drunk only half , but I sometimes find a second bottle but then I guess it doesn't count if you drink out of two bottles same time.
Lack of personal care too - AH used to be mega smart but now sits in a dirty stained dressing gown most days, although at the moment, he is getting dressed most days.
Also, leaving ring on and not being aware of safety issues......like leaving door open when he knows the cats have no road sense. I get round this by trying to be around 24/7 but not ideal.
I have experienced similar to 4myboys - he has at times convinced me I am imagang things or embroidering them.