Question: grey's anatomy does meredith cheat on derek?
Answer: On the Feb. 19 episode of Grey's Anatomy, Maggie (Kelly McCreary) drops a bombshell when she accuses Meredith (Ellen Pompeo) of cheating on Derek (Patrick Dempsey). Meanwhile, Bailey's husband Ben (Jason George) gets some shocking news about his little brother, while a new couple forms among the hospital staff.