When Peter Jones had unintentionally revealed what his sister had done for him. Tristan, once he had come to terms with it. Had thought that knowing about Ariel's selfless actions would not affect him in any way.
That he would be able to just continue on viewing her the same as he had done before. But he had been very wrong on that account.
There was just no way for him to continue viewing Ariel the same way that he had done before. When the two of them had gotten married, Tristan had been of the mind that he knew what he was getting into, that he was marrying a gold digger. Someone who was so financially irresponsible. She did not even hesitate to borrow money from criminal loan sharks.