He didn’t know which was a worse scenario: Lois being shot, or Lois gaga over Luthor for saving her.
The second one. No questions asked.
Lois being shot was clearly worse.
What if he has a Wicket?
One source doesn’t give us squat.”
Well, this particular source could easily squat Luthor.
He was keeping enough secrets from Lois already; his plate was full.
Something’s about to give

Michael
Edit:
quote: “Superman stopped by while you were in the bathroom.”
Um, actually wouldn't that be a pretty big hint that something's amiss? Luthor's bound to be wondering why he would lie about this.
Good catch by Christina!