That's the word I was looking for. Playfulness :D

I love the addition of the word "Or." Definitely adds to the playfulness of the piece.

I had been playing with the "or" as well actually! In the end I decided to remove it. Since most people here like it though, maybe it does make it more playful as you suggested. 

That one's GracEfully

I like it. I would like to suggest one thing. Why not add an 'or' at the last line to make it "Or at least until tomorrow"?

It works either way though. Cheers.

I really like this. I find it relatable and I like that it is playful. I like the last line without the "or." Makes me feel like the narrator's situation happens more often without the "or."

Your company kind and gentle  
A tad playful exciting  
Gracefully you cast your charm  
How could I resist  
So I proclaim forever I am yours  
At least until tomorrow  

EDIT: https://www.reddit.com/r/OCPoetry/comments/6fswyb/metathesiophobia/diksdyo/
https://oc.reddit.com/r/OCPoetry/comments/6ft93k/november/dikzatm/