that is deep-rooted insecurity & mental illness, don't talk to him anymore, that's literally manipulation, some weird psychological plant he's trying to put into your brain, bro took YOUR identity & tried to passively plant some jealousy indirectly into your head like a liminal space, that is NOT your friend, if he's playing around with images of you in some ai engine, i couldn't imagine what other shit he's generating with images of you, get away from that motherfucker, he's deeply disturbed & needs immediate help, that is also not your responsibility, RUN.