It's difficult to say for certain why your ex is doing this without more context or information about your relationship and their behavior. However, there could be several possible reasons for this kind of behavior:
Attention-seeking: Your ex might be seeking attention or validation by posting stories and then deleting them. They could be trying to see if you notice or react to their posts.
Mixed emotions: After a breakup, people often go through a range of emotions, including nostalgia and longing for the past. Posting stories might be a way for them to express these feelings but then later regret sharing them.
Indecisiveness: They might be unsure about their feelings or what they want to share with others. Deleting the stories could be a result of second-guessing themselves.
Keeping you curious: By posting and deleting stories, your ex might be trying to keep you curious and engaged with their social media activity.
Privacy concerns: Some people are more conscious of their social media presence and may delete posts to maintain their privacy or avoid certain people seeing them.
Avoiding conflicts: If your ex is posting content that could be controversial or trigger conflicts, they might choose to delete it to prevent potential issues.
Testing reactions: Posting and then deleting stories might be a way for them to gauge your reactions or interest in their life after the breakup.
Moving on: It's also possible that they are trying to move on from the past and sharing certain moments but then deleting them afterward as part of the healing process.
Remember that interpreting someone's actions on social media can be challenging and may not always reflect their true intentions. If their behavior is causing you distress or confusion, it's important to focus on your well-being and consider limiting or avoiding interactions with them on social media for a while. If necessary, talk to friends or a therapist about your feelings to gain better insights and cope with the breakup.