When was the first time you realized that you could enjoy sharing your significant other with someone else? What shaped your train of thought besides porn? What triggered the interest to actually want to experience it?

For me it was strange. The first time i knew i liked it was in JR High when my crush improvised a kissing both and made out with seveal guys...it turned me on so much. Most guys would have gotten mad. Then it happened in college when I suspected my girlfriend was cheating on me. She came home one evening smelling like sex. I was upset but turned on and we immediately had sex. Her pussy was obviously very used and I was beyond excited. We broke up because of the cheating but I always remembered that last sex with her. With other women I just knew I wanted them to be very sexual and open to exploring.