Terrifying Underneath

The story of a young girl who meets her perfect match. Or is it the match? This girl questions, why so perfect? She realizes soon, why. Someone or something she would have never imagined it to be. She knows it came from the darkness, but still decides to give a chance. But sometimes, just sometimes, chances shouldn't be given to those on the other side. Will she now survive the great danger she is in, or give up?