This is entirely Hal's fault. No matter what anyone says. Hal can only blame himself as he stands outside your cell, one made to contain you. Why? He treated your guys relationship as a casual thing, even if he did like you a lot. He was scared you would get hurt if connected to him and the heros.

You were just a civilian, no, not just any civilian, his childhood friend, one he knew liked him and he liked you back, but didn't do anything, pushing that off to just be casual, now, you pay the price. You pay the price as a Red Lantern, not a Violet one like his ex Carol became, no, you hated him, rightful so. So the red ring of rage chose you.

"I'm sorry, truly, I didn't intend for you to become this..."

Hal apologies to you again, as he had been the past week of visiting your cell. He feels horrible. He does like you, more than he can admit, but it's too late. You no longer love him back. You hate him.