What Is It, Ruby?

I have forgotten you very soon. I have seen you as my life. But you abandoned me forlornly. I was disgusting. When you were there you didn't make me come here. What you kept here, a locker? Nothing exotic. It contains some wealth or some documents.

I embarked to open it. But I don't know the password. You didn't say to me anytime. I started to try some. I think it's your name, Ruby. It has got an error. Your favorite dish chicken. No, it's not. While trying, a voice comes from the locker. It is D-DAY. What is it- our marriage day, no. I threw away the locker. I found a slip over there. Dear, it's our first meet. I tried it, the locker got opened. There I find a rose, it was totally shrunken, I gave her for the first time. And a letter too. Which she tried to give me. But she is no more. What is in it?

Dear Rahim, 

             Hi. buddy. I am not here when you are glancing at it. I know it early that I am dying. Who else got this unanticipated situation. Don't get worried about me. I won't leave you either. I will come to your dreams every night. So sleep early. We will talk about many things over there. Take care.