Ghosting but orbiting on social media

Hello everyone, I felt forced to do this post because the behavior of my ex « almost-boyfriend » is really getting on my nerves.

(We dated once, fell in love -for the first time for me; that’s why I’m so attached to this story- but can’t be together because I’ll move away for my studies in September)

So our super quick story « ended » in February, on good terms, we said that we’ll keep in touch, but we neved kept talking. During the lockdown, he reached out to me to ask me a question (a legitim one, not an excuse to talk), we exchanged a few messages back and forth but he completely ignored my last messages and didn’t even click on the conversation (it has been 3 months now).

But the thing is, as we have each other on almost all social media, he always watches my stories on both Snap and Insta, likes my posts and pictures and for example liked the Facebook page of an organization I work for and that I advertised to my contacts.

By the way, I recreated an Insta account last month and sent him a follow request but he purposely waited one week before accepting my request and following me back (he’s always on Insta) and he still kept watching my stories and all afterwards.

He has a history of depression, so I know that sometimes he can be awkward but I don’t really understand the game he’s playing since 3 months. I know that we’ll never be friends but I thought that we could be friendly and still keep the contact going. He is older than me and is very kind and mature though, so I’m sure that he isn’t doing that to hurt me.

Now I don’t know why his behavior means, so can someone help me?