Do you know how it happens? You live a happy life - you adore someone, you want to live with him all your life in grief and joy, in illness and health, till death do you part. And then it is not death at all, but someone else who parts you! It does not matter how it was before or how it will be later, if you just want to die right now... Either because you were betrayed, or because you feel your insignificance, that you have been exchanged for another, or because everything has already lost its meaning.