beast and his master

Well what can I say this story is pretty much explained in the title. I guess I could give a bit of detail.

this story is about a young teen (18) he lived many lives in pain and fear. he doesn't like to cause people pain but the sight of blood drives him mad and out comes the beast. then comes along a girl she has a past equally as bad and she has a gift. she loves animals and well him being a beast and all she sees it as a challenge to tame him and well I guess you'll have to read to find out of she does or not.