It could mean that your ex is still interested in your life. Maybe they miss you or are just curious about what you're up to these days.
There are several possibilities. One is that they are simply being friendly in a way, like they still care about you as a person even if the romantic relationship is over. Another reason could be that they are having second thoughts about the break - up. However, it's also possible that they don't even realize they keep looking at your stories and it's just a subconscious thing. Don't read too much into it until you have more signs.
It could mean a few things. Maybe they're still curious about your life or they haven't fully moved on. It might also be a habit they haven't broken yet.
There are several possible reasons. One is that they miss you and are looking for any small way to feel close to you again. Another reason could be that they're comparing their current life to the time when you were together. Or perhaps they're just being nosy and have no deeper intentions at all.
It could mean she's interested in you. Maybe she likes you and wants to know more about your life through your stories.
It could mean they still care about you in some way. Maybe they miss you or are just curious about how you're doing.
It could mean he's interested in you. Maybe he likes you or he just finds your stories really interesting.
It could mean that your ex is still interested in your life. Maybe they still have feelings for you, or they're just being nosy.
It could mean that your ex is still curious about your life. Maybe they haven't fully moved on yet and are checking in to see what you're up to.
It depends on how you feel. If it makes you uncomfortable, then yes, you can block them. You don't need to put up with something that bothers you.
You can simply ignore it. Acting like you don't notice can show that you've moved on and it doesn't bother you.
It may be that they're still interested in your life to some extent. They might not be able to completely cut off that connection and seeing your stories gives them a little peek into your world.