Ok...so of little consolation that he is still suggestive to you but the fact that he has now displayed this persistent behaviour to staff at least means it is not just you he is fixating on and they will seek advice now as a matter of urgency. Try not to be upset when your dad gets annoyed at you ...think of him by a different name when the dementia presents badly...so you can then distance that association from your normally lovely dad. The number of times I was told to **** off by dad when he was his dementia alter ego when visiting I lost count off. I could tell immediately from his body language in the first few seconds what sort of a visit it would be.
Thanks love.dad.but, I am made of tough stuff, so I know it's not really my dad and he can't help it. I would just like it sorting out soon, so at least I can visit him in peace or some sort of normal, if we ever get that with Dementia. My dad's body language changes too so it is very easy for me to identify.