Barry when he watched you die. It was just meant to be an in and out mission but you ended getting in a little trouble. Zoom took you back to his hideout, where he malnourished and beat you. After months of looking Barry managed to find you. Zoom was there, lurking in the shadows. Barry gasped at the sight of your skinny and bruised body. "Y/N, I'm going to get you out, okay." He said looking sadly at your body. "Okay." You didn't have the heart to tell him you were going to die. As soon as Barry tried to pry the cell door away, Zoom came and just killed you.
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"I think the hardest part is she didn't have the heart to tell me she was going to die." Barry said as he looked at Iris, tears in his eyes.
(For @Glader_Witch_Wolf)