unrequited

adj

1. Not returned; not reciprocated; not repaid.

   “His expressions of love went unrequited.”

   “Enough for me that I stand on the privilege of a free Scottish-man, and will brook no insult unreturned, and no injury unrequited.”

   “ONE of my comrades there—another of those victims of eighteen years of unrequited toil and blighted hopes—was one of the gentlest spirits that ever bore its patient cross in a weary exile: […]”

   “To her mind, a girl who would tell of the unrequited love of a man for herself, was unspeakably base.”