Who Has Alex Karev Dated on Grey's Anatomy?
Your Comprehensive Guide to Alex's Romances on Grey's Anatomy
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Alex sleeps with Lexie prior to Izzie's unexpected return. During the season six shooting, Alex hallucinates after getting shot and mistakes Lexie for Izzie. Their fling doesn't last, since Lexie later serves him with the truth about his visions after he goes around the hospital pretending to be a badass with a bullet in his chest.