The novel 'Love Eternal' is written by H. R. Haggard, published in 1918.
It is a love story of a puritanical parson's son Godfrey Knight and a
merchant's daughter Isobel Blake. Their love starts at the age of 10 and
they are separated by Godfrey's father at the age of 17. Although they
are bound to remain apart from each other but their love is immortal.
They are physically apart but their souls grow nearer before leaving the
body. These immortal lovers face trials and take pledge that they will
meet forever after death.