LW1 - If you guys have separate finances and split everything regarding bills/payments, why not split the repair cost?  Where he got his money is irrelevant, and it sounds as if he's sticking to the pre-arranged financial situation.  Just because you gave advice that happened to pan out for him, it doesn't mean he owes you anything.  Had you given him that advice and he lost it all, would you foot the bill alone for the repairs since your advice cost him his inheritance?