So to the people that believe in past lives... do you believe a past life could have been as a being not of the Earth?

When I was 6 years old I fondly remember my invisible friend. He was an alien. He told me that I was an alien too. I even asked my parents if they were sure I was they're son probably much to they're surprise and dismay.
(Edit to add information below)
My strange alien interests continued throughout my school years. I would read books like my teacher is an alien and wish I was the kid in the story. Able to leave the world behind. Growing up I always viewed human beings as inferior. I have always felt that if I had the chance to leave this world, I would.
A strange children's fantasy?
or
a window into a past life? You be the judge!