Perhaps psychologically, sympathy pains allow the man to go through the pain with the woman, so she doesn't have to do it alone. According to one article I unearthed on the subject, though, there is a biological foundation for these feelings. Men with pregnant partners were shown to have an increased level of estrogen and a decreased level of testosterone in one test.
William Blake (1757-1827) , English artist, mystic and poet wrote Songs of Innocence (1789): a poetry collection written from the child s point of view, of innocent wonderment and spontaneity in natural settings which includes Little Boy Lost, Little Boy Found and The Lamb;
Anderson's 'Punch Drunk Love.' Blake died at 35 years old, seven days after the suicide of his girlfriend of 12 years Theresa Duncan. He was found off New York's Rockaway Beach, leaving the art world to postulate conspiracies behind the art darlings' double suicide. Francesca Woodman (1958-1981) was a young surrealist photographer who captured her self-portait as female body trapped in domestic space.