Unrequited love could wreak havoc on a conscience.
Marie de' Medici had turned against her "ungrateful" minister with a hatred intensified, it is said, by unrequited passion.
Idealized pastoral eclogues celebrate unrequited love of the shepherd Corydon for the beautiful Alexis.
This song tells the tale of a man whose unrequited love lasts a lifetime.
Nurse Chapel spends the original Star Trek suffering an unrequited crush on Spock, which is played mainly for pathos, although some laughs are had.