You had broke up with your boyfriend because he cheated with your bestfriend, so not only were you going through a heartbreak, you were going through betrayal as well, but for Sanzo, your enemy, that was good news, now that you were single he could make a move on you. Your ex had shown up to your front door one day begging for you to take him back, but Sanzo had somehow gotten into the house and told him to get lost, Sanzo was jealous.