No more dreams, please.

I've been dreaming about Nick every night for about the past week. I wake up in tears and unable to breathe. The one last night was especially hard to wake up from. I keep dreaming that he's not dead. That he faked his death to get out of some kind of trouble or something.
He came to my apartment in the middle of the night and we sat up for hours just talking, him crying, me wiping away his tears like I used to do when he'd cry, which wasn't very often, and like he'd do when I cried. Then he left my apartment to take some little girl home (no idea about that, it was totally random) and I went to find him after a few minutes but couldn't. I woke up saying his name and crying. I keep thinking that he ISN'T dead, that it was NOT him in that casket. I know it's easy to slip into denial when you don't have the closure of a funeral, or even a memorial service, but I SAW HIM in the casket, I saw them CLOSE the casket after we all said goodbye, after I kissed him for the last time. Why am I still fighting to accept that he's gone? Why can't I move on?