"It's hard to pin it down to any one thing," Clark says, aware that if he told Cipher Nine the whole story, they'd likely still be talking about it this same time next week. "I wasn't as careful as I should've been, and I didn't know if I could trust him with my secret, so Lex started digging into my past on his own. In hindsight... part of me kind of wishes I'd been truthful with him from the start. But it's impossible to know if we would've ended up in the same place."