Why...

...is it that when you think your over someone they pop up and you get all twitterpated and think maybe it could still work? Then.... you see him with another girl and he looks so happy and you want to be happy for him but part of you wishes you were that girl!?
Right now part of me wants to give back all of the things i have treasured up from when we were together and all the memories i have written down just to show him how much i cared and how much it still means to me and hope that he will feel the same. The other part of me wants to Burn it all and forget it all ever happened. But I cant bring myself to do either one so they just sit and collect dust until I'm feeling sorry for myself and go through it all and wish that it was all still the same! But its not and i have to find a way hide all of these feelings and live with it.