He's checking my Instagram account

Okay, so basically my Instagram account is public and 2 weeks ago this weird account started following me. It was a new account made and just had 1 post and the bio was like “I’m a trash man, followed by trashy people and dm’ed by even trashier people”.

I didn’t pass any remarks off this account but just a few minutes ago I was going through my account unfollowing accounts I wasn’t interested in anymore and at the end it showed me recommendations on who to follow and I seen my ex’s name (we’re only broken up about 1 month, but I want to be to clear that I have no intention and deffinitly don’t want to get back with him. I’m so much happier without him) anyways, I was curious about the account and checked it out and I seen the bio and was like ‘OMG I remember this account’. Also the account doesn’t follow me anymore.

Now my question isn’t really trying to figure out if he still likes me or is he stalking me. It’s more,

If you were stalking an ex would the account being public or private make you more interested in knowing what they were up too?

I like the thought of him checking out my Instagram to see how I’m doing, or what I’m up too because I’m doing good and he hurt me a lot! So I wouldn’t mind having the thought that he misses me or regrets breaking up with me… It makes me feel good about myself, boosts my ego.