Most Helpful Guy
No one follows without the hope that the person they followed, follows back... so why are you surprised? And it’s not like he hates you, I’m sure he just figure you being friendly post breakup, so he was following suit. Wouldn’t overthink the situation.
Most Helpful Girl
It's probably nothing, I would follow an ex back if they followed me
You didn't state a reason for him not to follow you, it's not like you will see each other all the time