A strong connection between two people that is imbalanced and never results in a formal relationship, toying with the emotions and ending in sexual tension that is never resolved.
I need to end this nonlationship because when you sleep in my bed every night, it plays with my head.
Girl, you need to get out of that nonlationship and get laid.
Person 1: Why does everyone think we are dating?
Person 2: Because we spend every waking moment together.
Person 1: It's not like we're in a relationship.
Person 2: That's because we are in a nonlationship.