The fact that you can dupe/duplicate/clone a townsperson by marrying him/her, losing status (there are a variety of ways to do this), and marrying him/her again is a known issue. It was discovered prior to launch, and we chose not to fix it (it was entertaining--players seem to like commenting on the amazingness of the bedroom--and didn't really impact the game negatively). So it's kind of a fun cheat / Easter Egg now, even though it wasn't intended at the beginning.
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