It's not you it's me

I have spent a thousand hours deep inside my head
When I found you I was sleeping in someone else's bed
And the shapes begin to focus 
After all these years
The broken shards were actually pieces
Of this picture fit together
Nobody sees the single layers
Form shells of all those substances
I find you lodged in between
Pressed like a flower to preserve
Your colors like the day you were saved
I look at you years later
And understand exactly what you mean