Since I was born I started to decay

Dunno why but I still remember when you called me up on the telephone last afternoon, I needed to ask you a favor, and I dunno why but I also still remember what I just dreamed a couple of hours ago... Maybe I'm just thrilled 'cause I got in touch with you. 

Whatever. 

I remember how that dream was so scary and how I was so brokenhearted. 

Vividly.

In my dream, this guy –with whom I should have a published paper in Nature Neuroscience– appeared out of nowhere. We were walking across empty and cold German streets, and then we got into a supermarket and then we left the supermarket and then we got into an old building, and so on, and then the dream became some sort of a Matryoshka-like story, like those of Christopher Nolan's, but this is not relevant. 

The most relevant thing is that you... You were spying on me.

I can't explain just why I knew it, but I knew it. 

I felt your presence behind my steps, like a ghost, like a shadow, like the wind.

Then, in a moment, I saw your reflection in a window. It was electrifying. I got shocked. Freezed. Dumbfounded.

I must have been sixteen years old, or so. My own reflection was younger, and I felt so weak and had no confidence in myself. As always happened when I was sixteen. 

What's all this fuzz about...? Are we running...? 

Are we hiding...?