-- Continuation of response to John's FDK --MORE?
I think he under-estimates how pleasurable it is to Lois to eat food made by a man who really loves her. I also think he under-estimates how enjoyable it will be for him when she shows her appreciation at the pleasure he has given her.
But he didn't make it; he only bought it. Don't worry, he'll cook for her again sometime, I'm sure.
LEX: No, I'm sorry, Mr. Kent. I'm not hiring a new personal chef at the moment.
How is Clark so familiar with the diet of the significant others of rich men?
Not of all 'rich men', just this guy. Lex doesn't seem like the type of person to ever enjoy eating pizza.
LEX: /holding a fork and knife/ What do you mean I have to use my *hands*?
Clark: Lana always tried for that diet, and me I had to earn the money to make it logical she followed it.
Luckily, this Clark never used his super powers to pad his or Lana's lifestyle.
I'm surprised this didn't lead to him finding out the curse does not apply.

But they are a charity event AND he's dressed as Superman.
So it wasn't an emergency?
Clark: The suit is very tight. I had t leave quickly so people would not accuse me of being indecent.
CLARK: So, in a way, you could describe it as an "emergency".
He could just fake not feeling good.
Clark: We don't want other people to think Kryptonite works.
Wouldn't it be better to have Lex think it repels him from Lois?
And maybe Luthor speaks the truth at times.
At times, he does.
CANON CLARK: Oh, shut up! I still can make love to her and you can't.
CANON LOIS: Want to bet on that?