I have two brothers one is 54 and has had severe mental health issues most of his life and another who is 58. They both still live at home with my father who now has dementia. My eldest brother is a carer for both my brother and my father. I am the youngest and live with my husband and children in a near area. I do see my family often and help my brother with caring for my brother and father although the bulk of it falls to him.
My oldest brother is a lovely, sensitive man but struggled to make a life for himself. He dabbled in various creative careers but nothing really stuck and while he still has some artistic hobbies he hasn't had paying work for years now.
He has not had relationship success he met a woman online some years ago and the dated long distance for a while but it didn't work out.
I know his life is very difficult at the moment with his caring responsibilities as well as his own health issues and depression but I am worried that he has an unhealthy interest in the daughter of his friend. She is in her mid 30's and helped him build a website for his hobby. He has become somewhat obsessed with her and imagines he is in love with her. She lives with her husband and is most likely oblivious to his feelings as she has known him for 20 years and sees him as an uncle figure. I know she seems to him like an escape from his situation but its so unrealistic and I worry its only a matter of time before he does something to embaress himself.
Should I say something to this young woman or to her father (my brothers friend) to try and stop this situation getting worse?