I live because of you

Ok again, still wear a grin.
Happy to see you my friend.
Here we meet, my only true double.
A journey with a time machine
forsaken and clean a just sort of thing.
Only fearing the distance needed to go
Proving I'm your card to play when all is said and done
seemingly as for me too.
What is said is true, I live because of you.
A once forgotten question that loses relevance
once the plot has been seen and accepted
And in all actuality, you are just a time machine
astronauting a vehicle through the boundaries
set by forces beyond your control.