Dr. Tina McGee: Fifteen years ago, Harrison and I were thick as thieves. We were promising young scientists in Starling City. He was such a kind man. Then everything changed after Tess died.
Barry Allen: They were gonna get married?
Dr. Tina McGee: I understand how grief can affect something, but this was more than that. It was like, after that day, Harrison Wells became a completely different person.
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From: The Flash