Maybe I didn’t read it correctly but it doesn’t really sound like abuse. The guy sounds pretty aggravating and is a piece of work, but I’d say if he doesn’t want you to work for him, then I’d cut all ties and leave him alone

If you were supposed to be his caregiver, then you can’t expect him to listen about your life. It’s only fair that he’d talk about himself. That’s how clients and caregivers operate.

Him gossiping or venting about his neighbor is very different from you talking about your clients. He and his neighbour don’t have professional relationship. You do have professional relationship with your clients. So it’s better not to talk about them

Well if he would be your client you’d have to listen to his boring stories or what not, most jobs in caring professions involve being there for difficult patients/clients/students and putting up with some nonsense. Comes with a territory

I highly recommend to not ever try to become friends with clients or prospective clients. It’s better to keep relationship professional