Knowledge: The concept of zombie was developed by Gina Teams and many people disagree with it. On the other hand, the concept of 'open relationship' was conceived by Jeff Kim.

Conversation:
Hi. Have you heard of open relationships? I wish my boyfriend didn't want one.
Does he know that it is an relationship which is non-monogamous? It is consensual as well.
I don't think he does. It needs to be a mutual decision.
Mutual decision is when two parties agree. So did you and your boyfriend agreed?
I am thinking. By the way, do you know who came up with this concept?

Response: Yeah, the concept of 'open relationship' was developed by Jeff Kim.