I am sorry that I can't travel the distance to see you again right away. I know, it is my fault for being so far away. Why not come to see me?
I am sorry that I have an education to complete. Please try to see that it is important to me.
I am sorry you take things the wrong way, even if what I say is completely harmless. Please see the positive and not create negatives out of nothing.
I am sorry I hurt you without even trying. I am obviously a bad person, so is that why you cut me deeper?
I am sorry I can not be the person you think you feel for. Why not ask me who I really am, as a person instead of an object.
I am sorry I can't just leave my entire life behind. I wish I could, but I just can't do it. I can't see how you don't understand why.
I am sorry I gave you my heart. It breaks a little more with every day that passes.
I am sorry that I am shedding tears over you. I have never cried so much because of one person before, and neither think it is right nor just that I have to cry for you.
I am sorry I let you in. You are the first to break that barrier in a long time, and maybe I should make my walls a little thicker next time.
I am sorry that each and every conversation we have gets misconstrued and ends with my apologising. Every other sentence should be "I love you", not "I'm sorry".
I am sorry, but I don't know if I can take much more.