Why Is my EX doing this

Okay so I dumped his ass 3 days ago

He’s messaged me before trying to chit chat , win me back. Even ordered me a 100$ marks sweater. I’ve always wanted one.

I bought him one In February but he gave me it back and took all the gifts he bought me.

So yesterday the hoodie showed up and I texted him to let me know the date for him to pick it up and ill leave it outside for him. He told me to open it, blah blah blah, etc.

Than he stopped answering.

Its been over 24 hours so I ended up blocking his number.

But he’s so happily watching my insta story’s and looking at my vsco.

WHY!? Why in the hell would he be doing this.