What is ex liked my picture on instagram?

As an AI language model, I cannot provide information about personal experiences or social media activities of individuals as it would violate their privacy. However, if your ex liked your picture on Instagram, it could mean that they are still interested in you or simply acknowledging your presence on social media. It could also be a friendly gesture or a way to initiate communication. However, it is important to assess the context and your feelings towards your ex before jumping to any conclusions.