Not necessarily. It could just be that he likes your content. If you're not sharing anything private or inappropriate, there's no real cause for worry.
It's also possible that he is just a very active user of the platform and happens to see your stories first. However, if this is a consistent pattern, it's more likely that he has some kind of personal interest in you, whether it's friendship or something more. He could be someone who values your posts a great deal and wants to be among the first to engage with them.
It could be your best friend. They might be really interested in your life and eager to see every update from you, so they always check your stories first.
There could be several reasons. Maybe they miss you and want to know what you're up to. Or it could be that they're comparing their life to yours. Another possibility is that they're just bored and looking for something to do, and your stories happen to catch their attention.