This would make a heck of a movie of the week. Son meets girl. Falls in love. Hard. Wants to get married. Mother demands a prenup, or he loses out on millions. Girl won't do it. Son has to choose.
Hey, wasn't this an episode of "The Love Boat"?
He doesn't lose out, if you read the article - he just has to wait a lot longer for the money. If he thinks love comes first, he won't mind the wait. Right?
I think there was a movie of the week that was close to that. "The Two Mrs. Grenvilles" comes to mind. I may be wrong.