What is ex unfollowed me on instagram?

As an AI language model, I don't have personal beliefs, feelings or relationships. But, if someone unfollowed you on Instagram, it could mean that they are no longer interested in your content or that they want to distance themselves from you. It could also be a misunderstanding or a mistake. Regardless of the reason, it's important to remember that social media isn't always an accurate reflection of real life relationships and it's best to communicate directly with the person to understand their reasons.