What should I do?

Okay so my ex texted me after I sent him a message saying how I would’ve preferred if he never hmu today if he was just going to ignore me the rest of the day. After I sent that message I got off of Instagram and stayed off for a little under a hour. When I checked again I had a few messages from him, but I haven’t looked at them yet. These messages appeared like 5 minutes after I sent my text to him. Should I respond to him or just ignore him like he did me?
What should I do?
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