Lana gives everyone a headache, you're not alone. Adam (played by Ian Somerhalder) is someone Lana meets in therapy after she breaks her leg, and he is this rather mysterious stranger who winds up moving into the apartment over the Talon. He's hot. He's got killer chemistry with Lex, the one time they met all they did was snark at each other (see icon). Oh, and Clark doesn't like him.
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I think he's the best thing since Lucas.