Barry had known from almost the very beginning that you were a vampire. Bruce had advised against him pursuing you because of it,but against all better judgement he was drawn to you. Even volunteering to be your personal blood bank,you always stopped just before you needed to. It felt to him like being a human gas pump,but as long as you were healthy that was all that mattered. He'd seen how it was for you when you didn't have access to blood,You got pale,squeamish,dizzy,and at some points had even been admitted to the hospital and given blood bags to drink out of until you regained yourself. So it had become a tradition every morning and night,you'd drink just enough from him to make sure you got through the day.

You questioned him about his true feelings on the matter but every time he insisted"I really don't mind,I'd prefer you take my blood than have to stay in the hospital. I care about you so much and I just want you to be healthy..okay?"