My favorite by far are Napoleon's love letters to his wife, Josephine.
Dec. 29, 1795
I awake all filled with you. Your image and the intoxicating pleasures of last night, allow my senses no rest.
Sweet and matchless Josephine, how strangely you work upon my heart.
Are you angry with me? Are you unhappy? Are you upset?
My soul is broken with grief and my love for you forbids repose. But how can I rest any more, when I yield to the feeling that masters my inmost self, when I quaff from your lips and from your heart a scorching flame?
Yes! One night has taught me how far your portrait falls short of yourself!
You start at midday: in three hours I shall see you again.
Till then, a thousand kisses, mio dolce amor! but give me none back for they set my blood on fire.