Linkin Park - In Between Lyrics Meaning

This may be way out there, but this is the story line I attribute to this song:

He was trying to be something/someone he knew she needed him to be in order to form a relationship with her. The whole time, even though he wanted to believe he could really become that person, a piece of him knew that he was faking to some extent. In order to be with her, he continued, and lies piled up. The lines between his lies and the truth got blurry.

Then, he realized he just couldn't be that person. He had broken his promises (perhaps in a religious sense, or perhaps referring to some addiction), but because of his pride, he blamed it all on her. Guilt's a language she can understand - again possibly because of her religion, or possibly because in the past she would lay guilt trips on him. Underneath it all, though, he feels guilty on his own about the way everything transpired. Fear is not afraid of her - she fears God, has feared him at times, and is no stranger to the word.

The only thing that's worse than one is none = when you've not only let everyone else down, but you've let yourself down as well. When you can't even look at yourself in the mirror.

He doesn't know why he says or does the things he says or does that make it seem like he just doesn't care, but underneath, he really, really does. He just feels so bad about everything he has done and said and the ways in which he has let her down that he can't find the words, perhaps doesn't feel worthy of the words. He is admitting that he deceived her in the past, even though not even he realized that completely at the time, and it's all a big mess now, he knows he's broken her heart, but he's sorry, and he wishes he could make it right.