Why Columbine?

I guess most people here have heard about school shooter/serial killer fangirls but the question I am asking here is why do these people (mainly teenage girls) gravitate to Columbine the most? My guess is that they have experienced shit similar to E&D but many other shooters have also experienced bullying and shit like E&D so why haven't the fangirls gravitated to them? It all just seems strange to me.

1: A connection with the idea that Dylan and Eric were bullied. Wether or not Dylan and Eric were bullied is actually a very sad, interesting and controversial question imo, because some sources verify this and others dismiss it. But I do, nevertheless, believe that these Girls have been bullied and that they relate to this perspective

2: Hybristophilia. The sexual attraction towards people that have carried out violent acts.

3: Mental and emotional problems

Also, there are other mass murderers that have had similar fangirls. Hybristophilia pretty much evolves around fascination with serial killers