Is crush trying to make me jealous?

I was talking to my crush for a few months, co worker, he asked me out and wanted to travel with me, i said ill think about his offer, 2 months past and lockdown happened, came back to work and my ex has been trying to get me back and turned abusive. Co worker is aware that I've said no and co worker has been posting lots of pictures of him solo travelling etc. He's also told my other co worker he would never do what my ex is doing to me

Is my co worker trying to make me jealous? He never did this before, posting stuff. he's new to the area so doesn't know anyone or places to go really and that was our plan.
Is crush trying to make me jealous?
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