metaphor

I have this image of you holding a bloody heart, kind of sunken. When this girl needed help the most you tore out your heart to give it to her but her body rejected it and attacked it. It's a natural reaction, like allergies. But you can't seem to shake how you did all this for nothing, for her to turn it away so easily, no appreciation of the effort you put in. Sometimes she can’t help it, her body is causing her to have these reactions, which hurts because you want to help but you aren’t. And this rejection of your sacrifice might go to bite her in the ass, but she can’t help it. It's what she needs. You can’t try more and more because it will hurt her body further. And you have to let it be whether she dies or not. Or maybe it's not that deep.