Faced with the same decision as Willoughby, what would you do?

Willoughby must rely on a good marriage to procure his fortune. Willoughby jilts Marianne in a most cruel manner with a callous letter, leaving her to wallow in the misery of rejection for much of the book. He remains rather a villain until he confesses to Elinor that he resents having married for money and was forced to write the letter at his future wife's dictation. This is such a different era with different values. I suppose your question is also a personal one. You would need to consider what you would do.