Is he trying to get back at me or be spiteful?

I’ve been talking to this guy off and on for a year. He replied to an Instagram story I posted of myself and I didn’t reply. Not purposely but I just didn’t think it warranted a reply.

Then 2 days later I accidentally messaged him (my phone was in my pocket) and I apologized. He was pretty passive aggressive and said it’s ok we don’t talk anyways.

So today, I asked him what he was doing later to see maybe if we could hang out and he leaves me on read.

I don’t get it? Is he annoyed that I didn’t reply to him or is he trying to play games with me?
Is he trying to get back at me or be spiteful?
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