I took the meeting on the roof of Luthor Corp as Lex doing his usual big, grand, romantic gesture. And it is romantic: "If you decide to be with me, then join me at the top of the tallest building in Metropolis and look out over all that we'll survey together one day" or something along those lines.

I can totally buy Lex making a grand gesture, it just seems *odd* the way everyone is acting like Metropolis is two blocks away from SV. And since Brainiac drove Lex into that field, somehow, I wondered if he was also driving Lex to do something beyond just confronting Clark.

Also, he knew he'd just dropped something huge on her and unlike some people, who think a marriage proposal is the way to gloss over all the pesky implications of learning news that big about one's paramour, Lex recognized that Lana needed time to process and decide what she wanted to do.

Well, to be fair, Clark *did* tell Lana not to give him an answer right at that moment. (But the conscious paralleling of those two events actually explains the top-of-Luthercorp-tower thing in a non-"Affair to Remember" way--clearly Lana has to give her answer to both men in their iconic space. And Clark's iconic space is still the Kent home, but Lex's is no longer the mansion, it's really Luthercorp.)