Jennie and Lisa started dating in their early teens, being each other's first girlfriends. All their experiences from kissing to sex had been with each other. It's not surprising that at some point, they would be curious to know what it would be like to be with other people. Faced with this curiosity, they reached an agreement. Both were too jealous to fully open up about their relationship, and decided to create two rules. 1. Always tell the other that you're going out and don't hide it. 2. When they go out together, they don't go out with anyone else unless they both participate. Everything was going well, their lives as a couple were never affected, until a Australian appeared in their lives.