How would Trotsky and Edward get along? Would they both think the other is bug fuck nuts for the way the other acts toward their “loved one” (Bella, Lily) or could they strike up a friendship from hell where they think the other is super noble and gallant and swap romantic advice?
Anon is referring to Wizard Trotsky, a character from "Lily and the Art of Being Sisyphus". Specifically, he's the diary horcrux and he has... issues.
Relevant is that, in the pursuit of his own obsessive love interest, Wizard Trotsky once obliviated her, made her think she was his first cousin, and took her to a brothel.
Lily has never forgiven him for it.
And they'd think the other is nuts, of course.
Trotsky would see... vague similarities, perhaps, if you rubbed them in his face but it'd be very reluctant. From his perspective, Edward Cullen is nothing like him. The boy's moping over his perfect life, with an absolutely boring girl who is completely enamored with him, and he's immortal to boot.
There's no need to grease Bella's windows, stalk her constantly, or all the bullshit Edward does. Edward even had the gall to dump her and then get her back.
Where Trotsky has to fight for table scraps of Lily's attention let alone her interest and good will.
Trotsky would think Edward's an undeserving asshole. He's like Wizard Lenin, but even worse, because at least Wizard Lenin doesn't whine.
Wizard Trotsky might kill Edward out of principle because his very existence infuriates him (how he'd accomplish this is anyone's guess, my guess is he'd goad the Volturi into doing it).
As for Edward, well, he sees Wizard Trotsky's actions (as well as Tom Riddle's) and conclude the boy is mad and would otherwise have grown into the kind of man Edward once devoured. He's a criminal, a degenerate, and should never be allowed anywhere near Bella.
That he appears to be in love with a crass, smart-ass, obnoxious little girl is just the icing on the cake. Those two deserve each other, really, as the girl's nothing at all like Bella.
Edward would kill Wizard Trotsky himself, but he's above that sort of thing now, and Carlisle and Bella would judge him. A man worthy of Bella would not eat Wizard Trotsky.
But Edward does rat him out to the Ministry of Magic/Dumbledore the first chance he gets.