Mr. Castillon was shocked to hear it. He didn't expect such a turn of events at all.
Now he finally understood why he kept on insisting the last time that he'd only marry his (President Moulin) daugher.
Maybe he had seen this fact after doing a background investigation to Jane or maybe she had told him about this and he was out for revenge for the sake of pleasing his wife.
The more he heard of "his friend's" dirty laundry, he suddenly felt disgusted by his character.
How could a father abandon a beautiful daughter like her? It didn't fit in for him. It's hard for him to accept that.
He suddenly felt goosebumps after realizing that man could possibly do the worst in exchange of something, right?
However he knew that as an outsider, it's best to stay quiet rather than getting involved in their conversation.
