Should I ask why he does this?

So a guy I dated went from reacting to almost all my posts on social media, to ignoring most of my posts about a month before I broke up with him (we were normal and talking all the time still in real life. I never asked him why then but wish I did).
Obviously after we broke up, I wouldn’t expect him to react, but we’re talking again and he’s still ignoring my posts.
It wouldn’t bother me if he didn’t react to almost everything that our mutual friends post.

It really hurts my feelings. Should I ask him why? How should I go about asking?


Thank you!!

Should I ask why he does this?
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