I think I know how that feels, it's rough.

[A hundred years all poured back into his head at once and it was... a lot. But Clark was there to help him through it.]

And listen, I'm not gonna tell you he wouldn't feel bad, but that's a kinda shitty reason to keep something from someone. Caring about someone means they wanna know the bad as well as the good.

[He realizes he's a complete hypocrite, saying this, but whatever.]