Why did my friend unfollow me on Instagram?

[William]

There is a boy in my grade and we aren't best friends forever but we get along really well. I recently noticed he unfollowed me on instagram. I didn't do anything bad to him, ever, and we never fought or anything. He is still following other people who aren't even his friends, such as a Minecraft geek at our school. He is also following my close friend, who isn't friends with him at all. Both of them post really pointless photos and they like every single one of their own. He follows people who aren't even following him! He likes a lot of my photos, too. Did he intentionally unfollow me or did he accidently press something? Any advice or ideas would be nice