In 1952, British computer scientist Christopher Strachey taught the Manchester Mark 1 computer to write love letters:

Darling Sweetheart,

You are my avid fellow feeling. My affection curiously clings to your passionate wish. My liking yearns for your heart. You are my wistful sympathy: my tender liking.

Yours beautifully

M. U. C.

Strachey’s original program has been lost, but it was reimplemented by MIT digital media professor Nick Montfort in 2014, and now you can watch it pour out its heart online. (Here’s a PHP implementation.)