I figured it was something like that. Well, the reality is that you'll never see a nickel from your cousin, at least not without spending thousands on litigation. Even if you win a lawsuit, collecting is likely to be problematic unless your lawsuit is a Partition Action (google it) where you force the sale of the property and hope that the court awards you a bigger share to cover the money that you spent.
If you aren't willing to do that, your cousin can shine you on forever.

