A Living Will, or Advance Medical Directive, is a document that enables you to specify treatment that you wish to accept or refuse should you be in the unfortunate position of not being able to do so yourself. This is...
No. Normally only next of kin will be consulted. The Living Will and the Lasting Power of Attorney are, therefore, very important documents for unmarried couples.
You can simply destroy the document. If your decisions remain valid it is recommended that you re-confirm your intentions by signing the document and having your signature witnessed.