m I am absolutely in love with the 2nd last line:

"Misery is what makes her mine"

It's... serene. And sad. I love it. :)

I loved your imagery in the first stanza, especially "moonbeams shatter on the caves of her cheeks", and I think the idea of choosing her being sad over not having her is very interesting. However I don't think the last line really makes sense grammatically - something other than 'that'.