Why would a guy share his fantasy with me about me?

I saw fake photoshopped pictures of my fake supposed ‘pregnancy;’ and others of me, dressed up as a Muslim and Muslim shirtless ones of him. We’re not together, we never were and we don’t talk anymore, so is this creepy behaviour? He does this a lot on social media. I try to ignore it, but I find it so bizarre that I find myself thinking about it now.

Why would a guy share his fantasy with me about me?
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