[Abcdxxxx]

Everytime you see him you talk to him for about an hour?

Next time he mentions the couple, just be really casual and tell him you hope he's careful, and remind him that he's vulnerable. If he's concerned about papers he might have signed, he can always go and make a subsequent last will with an attorney, and notary. Last signed is usually what sticks. If he put their name on his house, he still explicitly say in his will that wants his assets to go to charity, and spell out that these people are not to be awarded anything. My grandmother figured out one of her daughters wants her house, and is waiting for her to die. She made a will that says "you get this amount in cash, and nothing to do with the house". There's nobody you can talk to on his behalf except for family or an old friend of his, if there are any. It's really typical. You'll see home care nurses suddenly inheriting homes once the senior citizen gets sick, and once they end up in the hospital, they have nowhere to go back to, so they end up in a home...which is like a sentence to death.

It's cool that you care... just remind him to have some common sense, and that nobody should want anything from him except for his companionship... and nobody needs paperwork for that.