Seriously, did he hit on her early in her career and she turned him down or something? This is outright obsession. She must have rejected him in a way so emasculating and demeaning and humiliating, and categorically undeniable with such confidence and self-assurance that he has gone full comic book villain. She’s his origin story. He’s still bullying her so hard I think he still wants her. He’s the high school kid who got rejected by his crush and so he becomes her persecutor. Bullying and ostracising at every opportunity - and with a brain so underdeveloped (demented) there is no sense of self-awareness or self-control. He’s basically at the stage of school shooting.