What makes someone valuable to you? Many things can be said in answer, but aside from the intrinsic qualities of that person, it is the memory of shared experiences that makes him/her precious. The times you have spent together, things you have done, all the laughters and sorrows you have shared, the problems you have solved with each other's helps, and all the long hours that you have talked and chatted and poured your heart out... all this creates a bond, and this bond is what makes someone special to you.
You say to me that i'll find someone better than you. No, i won't, i can't... because all the moments of my life that i have shared with you, i have done with no one else, and that makes you special. No one can beat that.