just say so

If one day you wake up and
you no longer care about me, say so over our morning
coffee and i will let you leave

I will not ask you why.  I will not ask you to stay one
more night.  I will give you a small smile to say that
it is okay and people lose feelings for all sorts of reasons and that
i will survive.

If it comes to it, just say so.
You should stay because you want to.
You should leave if you need to.