You should go now

Let's sit here, away from each other.
Talk to her, I'll joke with him.
Just Hello and Goodbye,
there's no room for anything else.
And when I go home, I'll wonder
what went through your head
and ask myself how
you managed to somehow
get on this side of the wall,
the side where nobody else is supposed to be in the first place.
Or did I allow you to come here?
Did I?
Why would I do that?
I should've known better.
The worst part is that you don't even know
where you are.
So, I'll avoid your looks, smile when your around.
Because I already showed you
way too much.
You should go now.