I really wouldn't read into it too much. He could still be following you for a number of reasons but the most likely ones are either (a) he doesn't feel the need to unfollow you/wants to stay connected even after the breakup or (b) wants to be able to check in to see what/how you're doing. I wouldn't stress about it too much. If it really bothers you though, just block or remove him.
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He wants to find out slacked you. He is a jerk. Sounds like he still wants you.
Because he can. Hell I do it with a few split tails simply for all the questions you're asking here.
Morbid curiosity. And the stars and planets aren't magically affecting what people do.
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Maybe he just doesn't care about social media so it doesn't bother him that he still follows you.
Your age gone to play this stuff...
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