You've done your good deed and he totally prayed on your connection as family.
If his own father has cut him off, there is probably a good reason. I would say to him if you want further help sell off your FJ, sports stuff and cut off your internet.
Those things are not necessities. The money from taking public transport, no internet, selling the sports stuff should keep him going until he can improve his situation.
He sounds like a mouch and every family has one.
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