replaced...

It's so sad to think that one day, all these happy moments that we create together, it will be shared with someone else. To know you will be happy makes me happy, but knowing that I will no longer be the reason for your happiness breaks my heart a little more each time I think about it. The fear of being replaced by someone better, someone who does the things we always do, someone who understands you more than me - it grips my heart so tight, it is so hard to breathe. How long until I am completely forgotten? Until my name is no more than a faint memory at the back of your mind?

But I also know that it's time to leave, and that perhaps this time, it is for the better. But I am not one to move on easily. How am I to just leave everything behind, just like that then? What about all the promises? 

My heart hurts so much right now, every second since Tuesday night. I don't feel ecstatic receiving the news, I don't. Instead, it hurts me. It hurts me so, so much...