There is nothing like the loneliness felt when my OH treats me without the consideration he used to. No one else sees this. It's like an abuse that has to be borne. I keep (today especially) remembering the quote I've seen others post here (it goes something like this ...." the problem is not their behaviour because they are ill and can't help it, the problem is your reaction to it " so I throw my angry feeling back on myself, bury them, pretend I'm calm and not hurt and this is very stressful! I think people who have not got the experience of caring for someone with dementia have nooooo idea of what we have to cope with.
I really must try and remember that quote and also stop feeling sorry for myself.