I ask my mother if she wanted to come shopping with me and my Step-Dad like usual she said she wanted to take a nap and said you go with him so I said maybe we will go for a coffee to my Step-Dad. She all of a sudden said I need you here?, I thought to myself but sometimes I help my Step-Dad because he forgets and brings the wrong stuff back and she makes him go back to the store etc.... It was never an issue before. Later that day while I was giving her a shower she said are you flirting with my husband? I said no Mom I would never do that first of all he is not my type and I have been in a relationship over twenty years and love my partner very much. It would be morally wrong period. I was really taken aback and hurt, and worried like what will she say next?
Gladimhere had a good suggestion about encouraging their closeness, too.
Please keep watching for updates. Many people in this community have had such issues. You're sure to find more reassurance and maybe more tips, as well.
Do you help stepdad shower as well? I only helped mine once when Mom was at home. This nearly sent Mom over the edge.
So, yes there will be times when those with dementia think that caregivers, whether family or not, will have these sorts of delusions. The only way that I have found to deal with is to assure her that he loves her very much and would notmdo anything to hurt her. It also helps if I have them sit together in the love seat and remove myself from the situation to do something in the kitchen. I do stay within earshot just in case this escalates into agitation which could become dangerous.