I met a boy...

I met a boy
as strong as me,
he lifted mountains
randomly.
And then
he taught me
how to fly,
from clouds
to space,
I thought I'd fly.
From him
I learned
to swim the sea,
to hold back rivers,
set lakes free.
He showed me how
to then breathe fire,
tornadoes bent,
I did aspire.
And finally
he taught me all,
and disappeared
and now I'm small.