This isn't a crush, it's obsession.You are never not in my thoughts. Your scent carries across a room and paralyzes me with longing. I don't want to hold your hand. Part of me wants to set you on fire and hold you while the flame consumes us both, to eat your heart so I know that only I possess it entirely.

Do you think it’s easy for me? No, I don’t remember you. I don’t remember holding you or talking to you or falling in love with you—but I walk around with a giant hole in my heart all the time. I feel your absence every second of the day. It aches and nothing soothes it. Losing you is bad enough, but I don’t even get the comfort of remembering that I had you once.
-Haden

Some crushes just never went away. They built, instead, into something permanent, obsessive and all consuming.

She blushed and so did he. She greeted him in a faltering voice, and he spoke to her without knowing what he was saying.

She thought he was just another crush and she'd move on eventually, little did she know crushes only last months not for four years.

Butterface - How does a guy slay dragons for a girl when they're all in her head?