I think this is about the person in the song being led on by someone they have feelings for, who obviously doesn't want the same thing but uses, and manipulates or leads them on. This is about the person in the song trying to get away from this poisonous relationship and their difficulties with it. The person who is doing the leading is tearing them up, he knows she acts the same way towards others and though he expressed his feelings she was cold and did not respond to him in the same way, so now instead of expressing his feelings he just writes them down etc. She was probably hurt and now just hurts other people instead of letting herself get hurt or feel something real. He put a lot of effort into trying to get reciprocal feelings from her but he knows it will not happen. He is now fed up and wants to put himself first, let go of the things he feels for her, and pull himself out of her grip.
I think this is about the person in the song being led on by someone they have feelings for, who obviously doesn't want the same thing but uses, and manipulates or leads them on. This is about the person in the song trying to get away from this poisonous relationship and their difficulties with it. The person who is doing the leading is tearing them up, he knows she acts the same way towards others and though he expressed his feelings she was cold and did not respond to him in the same way, so now instead of expressing his feelings he just writes them down etc. She was probably hurt and now just hurts other people instead of letting herself get hurt or feel something real. He put a lot of effort into trying to get reciprocal feelings from her but he knows it will not happen. He is now fed up and wants to put himself first, let go of the things he feels for her, and pull himself out of her grip.