Well, it might be that they're starting to feel less angry or bitter about the breakup. By unblocking you and watching your story, they could be subconsciously reaching out in a very low - key way. It could also be that they're bored and just looking at random people's stories, and yours happened to catch their eye. However, if there were still some good times in your relationship, there's a chance they have some residual feelings and are testing the waters to see if they still care about what's going on in your world.
Personally, I would hold off on reaching out right away. Just because they unblocked you and watched your story doesn't necessarily mean they want to re - establish a connection. It could be a momentary lapse of curiosity. If you do decide to reach out, make sure you're doing it for the right reasons, like if you truly miss them and think there's a possibility of a healthy relationship. But first, give it some time. See if they make any further moves. Maybe they'll send you a message first, which would be a stronger indication that they're interested in talking.
It could mean that your ex is still curious about your life. Maybe they still have some feelings for you, or they just can't help but be nosy about what you're up to now.
It depends. If you still have feelings for them and think there's a chance to reconcile, you could reach out casually. But if it ended badly, it's probably best not to.
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 trying to move on and think ignoring you is the best way while still being a bit nosy about what you're up to.