Have you ever been in love with someone you felt was happier with their ex?

When you get to know them, they're happy because they're still with their partner, and you begin to fall in love with them. Then for whatever reason they quit with their partner and don't seem as happy as before. Now had you ever wished they'd be as happy as before with their ex instead of trying to replace them?

Have you ever been in love with someone you felt was happier with their ex?
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