How did you react when told about sharing fantasy?

Just wondering how did the ladies in relationships react upon being told by your husband/bf that they wanted to share you with other men, and how did the whole topic come up.

My girlfriend and I were discussing our fantasies after watching interracial porn, and she took it quite well when I said that I would like to see her with black men. She said that it's something she would definitely consider doing in the right circumstances, and has affirmed that by getting physically aroused whenever the topic is brought up. As of now we are still looking for those right circumstances.. :)