A/N: Didn't really plan for this to happen, but it did. So let's put it out and see if it's crap like I think.
I DON'T OWN PJO!
Maybe, just maybe, being the 7th wheel wasn't the worse thing in the world.
No matter how you looked at it, the 7th wheel was always left out. You could have two tricycles, or three two-wheelers. There was always one left over.
That wheel was the backup.
If there was a flat, the seventh wheel was brought out to replace the broken, to help the rider.
That's what Leo was. He was alone, staying with his metal dragon head. He came out to save the others.
He had saved them all at one point or another. Helped them along to be able to do what they all knew needed to be done.
Leo's job was to be there as the replacement, ready to jump in at a moments notice.
And he was OK with that.
Leo had always been alone, kept to himself, never letting anyone get to close. It's to late in his life to change his ways. He's been this way for seven (there was that number again) years. Old habits break hard.
Would Leo like to be able to be more involved, have someone special to be with? Of course! He would be insane not to.
But for now, he was content with being the seventh wheel, ready to protect his friends in a moments notice.