The lovers in "The Heart of Me" have a line of poetry by William Blake as their touchstone: "And throughout all eternity, I forgive you and you forgive me." This implies much to forgive, and the movie involves a decade of suffering, punctuated by occasional bliss, and inspired by their misfortune in falling in love with one another. For theirs is not an ordinary adultery, but one complicated by the inconvenience that he is married to her sister.