Anyway, Peter keeps the secret for way longer than he should, considering his best friend has sworn vengeance against him for no good reason, and seems to be going kind of crazy himself. Just tell him, dude.
There's this whole plot in Spider-Man 2 about how Doc Ock's arms are kind of sentient and can control his thoughts, even though it's never really established how that's possible. It just kind of confuses the whole idea of him being a villain. Is he just a nice guy being held hostage by his intelligent robot arms? There's no reason for this to have been a thing at all. His life's work was destroyed and his wife was killed 2 hours ago. You can definitely be evil after that. It's fine.