In this way, we cling to each other, love each other but unfortunately live in different worlds. We obviously have everything with you, but we talk to the empty number on the phone all day and night. I look at your online account and want to reply but it is offline. Strange? Yes, very strange. If you no longer exist, why do you leave me with deep memories? Why do you often appear in the world of people? The memories in the album will always be with or without a group photo. Who are you?