Confidante: One entrusted by A with the secrets of B confided to herself by C.
He was my confidant, the person who was always on my side even when he wasn't taking my side.
Tis the greatest misfortune in nature for a woman to want a confidant.
I don't have close relationships with agents. They're friends, but they're not confidants.
I have only one confidant, and that is the silence of night.