When Kyle convinces Chloe to kiss Clark you can see in the corner that her head moves towards Clark but in the next scene her head is still facing Kyle.
(At18:00) The newspaper that Chloe is holding is obviously fake as we can see the photo has been glued to the paper instead of being printed on it.
When Lex swipes his credit card to buy fuel before they head to Metropolis, he swipes his back to front, not scanning the magnetic strip through at all.