After a break-up people are bound to ask what happened and it would probably be quite easy to talk shit about your ex. Don’t. Word will get around and not only will it get back to your ex but it also makes you look bad for doing the badmouthing. Rather, take the opportunity to take the higher road and just simply say “it didn’t work out” or “we grew apart” or “we decided to take a different path” or “we weren’t meant to be married” or anything else impartial and vague. It’s no one’s business. The Jewish community in each city is small and you don’t want to be known as the person who airs their dirty laundry in public. If you don’t want to do it for your ex’s reputation, then do it for your own.