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where there any complaints about his financial arrangements while you were still married ?====================================================================================

That really goes to the real issue: you imagined that you were entitled to part of his apparent "assets" for no other reason than that you were married to him, and perhaps this is why you became so. To your apparent chagrin, however, these assets existed only in your imagination.

You would not justly have been entitled to anything of his unless you could have DEMONSTRATED that a bona-fide contract existed between you providing for this, or that you had actually worked together in a money-making enterprise (implied partnership).

What his parents want to do for him, particularly if they are willing to pay gift tax on it, is THEIR business!