Clark and Lex have probably had the msot sexual chemistry in the entire show
LOL
____________________________________________________ The Cylons were created by man. They rebelled. They evolved. They look and feel... Human. There are many copies. And they have a plan.
Although it'd be great if Clark and Lois got together in Smallville, (I think their on screen chemistry is great) it looks like we're gonna get him and Lana at the moment. However, I can see it all come crashing down for Clark as Lana is bound to get jealous of Chloe, who knows about his past, something I think Clark will just conveniently side step now he is 'Mortal.'
"One must be a fox in order to recognize traps, and a lion to frighten off wolves."
He's not meant to be with anyone really. Yes, Lois is the love of his adult life, but things have only ever happened with Lois when he has adopted the Superman alter ego.
Lana is the love of his young life, and as such that is why he is still with her at present in Smallville.
Admittedly, it would have been good if they had paired him off with Chloe, but I think it is too far down the line now. As she knows all about him as well, I think their relationship dynamic works better as friends rather than lovers.
"One must be a fox in order to recognize traps, and a lion to frighten off wolves."