system
A chat on subreddit /r/NoStupidQuestions
human
As Friedrich Nietzsche once said: 

“A woman may very well form a friendship with a man, but for this to endure, it must be assisted by a little physical antipathy.”

Meaning it would only work if one of the two is ugly : )
gpt
Actually, it works best if both find the other unattractive because otherwise one could still want to be more, hence the relationship of friendship is not genuine.