A happy ending

Green fields, blue skies, clean air, and space wide enough for me to run around freely. I walk down towards the river infront, I stare. Little fishies rushing against the flowing water. Birds reflection subsides the rays of the sun. 

It was airy...

I like it...

I walk back up the hill, under the shade of a big oak tree. Slowly caressing it's stem, I cut myself, I wiped it off with my bandaged arm. It's sharp and rough.

"I wish I was like you, strong and beautiful. You're leaves that sparkles from the sun, body in contrast with the vibrant colours of the leaves, but still visually stunning. In snow, will your dark contrast shine against the snow like mine? I'm envious"

I hugged the tree.

"You smell like nature and sun... It's comforting..."

The next day, the girl never came back.

She couldn't.

What do you think happened?