In my head, Bill has internalised homophobia, survivor’s guilt, bi panic, and just think abt it… he always knew he was being too much to everyone and no one would tolerate or like him, and suddenly oh wow the best artist/man/person in the world genuinely like me :D then he just clings to the only and best relationship he has. He starts to think…huh, is this…romantic feelings??? But I also like girls???? Oh no what have I done?? And before he can figure it out, the public suddenly starts to ship k/s and EVEN RPF!! Now he has to deny everything and convince himself they’re FRIENDS. then the fallout happens, he feels betrayed and heartbroken cuz he THOUGHT they were best friends but apparently no he didn’t matter as much to Len. He starts to be a bad person (or even before that he does) cuz “im gonna die soon anyway” even tho Len tells him “you’re not always kind”. and Len passed away. Suddenly it’s oh fuck I should be the one who’s gone — im mean and bad and I eat a lot and I thought I was gonna be gone first not HIM!! So he lashes out more. Of course he could never admit his feelings (if he had them, he never could figure it out) cuz Len has family, and friends, and ofc the public. He could never do that to them, or to himself.

Or, William Shatner could just be an asshole.