Your Son Is In Love Day!
You, being a wealthy society type, want your son to marry the daughter of the partner in a competing firm in order to ally the firm with yours and therefore bind the two Wall Street behemoths into an unstoppable financial titan.
Your son is in love with a girl he met at the dog run. You've just ordered him to cut off all ties with her and prepare to marry well. The following is the last you will hear from your son until the day his mother dies (you'll be a suspect) 26 years from now:
You might think I'm doing this just to spite you. To tell you the truth, I don't know whether you're right or wrong. I hate you so much it's possible that I would alter the course of my life just to hurt you a little tiny bit. But know this, I will never take anything you have to give. And I will do all I can to live my life the way you would not. I will not become you. I'll die before I resemble you in the slightest. You won't see me again.
Then he'll leave. Everyone at the New York Stock Exchange is gonna laugh at you when they find out you drove your only son away.
Happy Your Son Is In Love Day!