I have to guess...it's either God or Air

Well written Sir, I think it's God.
5/5, take care, always believe in love, amit

Hey got to be god... nice one... take care...
anagha

Nice!!!

I think its a truck! because we definetly have trucks in our blood

Another good one!!

I liked the way this one flowed, and it certainly is a riddle, so since i'm not intelligent enough to figure it out, could you please fill me in. thanks

Its definitely God . It better be!!

Amazing poem.....i think its air or god....but if you wanted to go to the extreme you could go with somthing scientific like molecules.....don't know how you would meet then in the end though.....