I have my heart in a cage.

I was going to post this a while ago, but I guess I forgot the feeling and what it was I wanted to tell. But now that ache in my belly has returned. Friends. What would we be without them? According to Carrie Bradshaw; nothing. So what do you do when a friend lets you down? How much should you be willing to take until the limit is reached? I just know how much I love them, but even love can end. In a realationship you are told never to take the other person for granted. In friendship you are told to always be there for the other. When does 'always' turn into 'granted'?
The ache in my belly is caused by a friend. It's hard. To boys you can only say "Go to hell" and never ever speak to them again. To friends, it's not that simple. You want to forgive them, to be the bigger person, but it's so hard when they don't seem to understand how much it hurts. So then you're stuck. Moment 22. You want to 'break-up', to just say "Bye, forever", but you can't. You can't see your life without that person. You remember every time he or she has made you laugh, explore thing you wouldn't dare to do alone and how happy you could become just by seeing that friend standing there at the bus station waiting for you. Then you knew that you would have a great time. Now you're just trying to know him or her again. Understand what went wrong. Why don't I know all the secret gestures she or he does, the inside-jokes and the troubles, you wonder.
Is that when you should let go?