she doesn't talk to me but watches my stories

No, you don't need to be worried. Maybe she's just an introvert and prefers observing from a distance for now.

It could mean she's still interested in you but is shy or doesn't know how to start a conversation. Maybe she enjoys getting updates from your stories without the pressure of direct interaction.

Not necessarily. It could just be a harmless thing where they're just casually looking at your updates.

It could mean they're still curious about your life but don't want to directly engage. Maybe they miss you a bit but are hesitant to reach out.

Maybe he's shy. He wants to keep up with your life through your stories but doesn't have the courage to start a conversation.

It could mean he's still interested in you but is shy or doesn't know how to start a conversation. Maybe he enjoys seeing what you're up to through your stories.

You could try to initiate a conversation. Since he shows interest in your stories, it might be a good starting point. For example, you can ask him if he liked a particular story of yours.

You could try sending him a friendly message related to one of your stories. For example, if it was about a place you visited, you could ask if he's ever been there.

Perhaps she doesn't know what to say in response. Watching your stories is her way of staying updated on your life without having to come up with a reply. It could also be that she doesn't want to engage in a conversation directly but still wants to be part of your world through your stories.

I don't think you should be overly concerned. It could be that she's just exploring different people's stories and yours caught her eye. There's no real indication that there's anything negative going on just from her not following but watching your story. In fact, she might eventually decide to follow you if she continues to be interested in your stories over time.