Perhaps he's having second thoughts and is trying to reconnect in a subtle way by watching your stories. Or it might just be a random act and doesn't mean much.
Maybe he's still interested but doesn't know how to approach you directly.
Maybe he's not sure how to approach you directly but still has some interest in your life.
It could be that he's not completely over you or just has a habit of keeping tabs on people he's been involved with. Maybe he's not sure of his own feelings and is still observing from a distance.
It could be that he enjoys seeing what you're up to but is busy or doesn't want to have a full-on conversation right now. Maybe he's still trying to figure out how he feels about you.
Maybe he's just curious about your life. People often check out others' stories to get a glimpse of what they're up to.
Maybe he's just interested in your life and what you share.
Maybe he still has some interest in you or just happens to come across them.
Maybe he's just busy. He might have a lot of things to do at the moment, like work or study, and simply doesn't have time to check your stories.
He might be bored and your stories are a source of amusement.
Perhaps there's something going on in his life that's causing him to be distracted or not in the right mindset to watch your stories. Maybe he's dealing with personal issues or stress.
Maybe he's just lurking and not in the mood to text right now. Sometimes people enjoy seeing what others are up to without feeling the need to communicate.