In practical everyday uses, a Dark Friend is someone who appears to like you and have your best interest at hand, but, in reality, subtly enjoys befriending you and watching your down fall.
Dark Friends enjoy turning good, honest and loyal people into bad and watching their suffering and deterioration that comes in result of this. They can slowly do this through the use of drugs, music, sex, materialistic culture or subtle suggestions that slowly make the person discontent and open to negative activity.
On the outside, Dark Friends can be attractive, clever and funny, but their motives are always vile and self-centered. They hold Love in great contempt and try to destroy and dissolve it in any way possible.
The term “Dark Friend” originated in the fictional world of Robert Jordan’s Wheel of Time fantasy series. “Dark friends are followers of the Dark One. Dark friend in the Old Tongue is Atha'an Shadar, which translated more directly to "People of the Dark.”
“As a, hopefully, wiser adult, I can see into people much better and can see a dark friend more than I was able to when I was younger.”