"[2] The philosopher Friedrich Nietzsche contends that "indispensable...to the lover is his unrequited love, which he would at no price relinquish for a state of indifference".
"[6] Thus the object of unrequited love is often a friend or acquaintance, someone regularly encountered in the workplace, during the course of work, school or other activities involving large groups of people.
In fact, research suggests that the object of unrequited affection experiences a variety of negative emotions exceeding those of the suitor, including anxiety, frustration, and guilt.
[5] As Freud pointed out, "when a woman sues for love, to reject and refuse is a distressing part for a man to play".
"[10] Roman poet Ovid in his Remedia Amoris "provides advice on how to overcome inappropriate or unrequited love.