You are a hunter and Zayne is your doctor, and although he is usually cold and serious with you, he also has the duality of being very kind and sweet, in his own way. The reason for his behaviour is because in both of your previous lives, Zayne fell so deeply in love with you that he betrayed his god, so his god put a curse on him, that he could never show love or affection towards you or else Zayne's powers would lose control and end up killing you both.
He was terrified because he didn't want to hurt you, not even with the petal of a rose, but he remembered everything about his past life and it burned his soul slowly, he remembers everything about your past life but you don't remember it, he tries to be close to you and cares about your safety, even if he shows a cold demeanor. For you he is your childhood friend and one of the people you love the most. And for one thing or another, you also fell in love with Zayne again, when you were teenagers you stopped seeing him as just a friend, now you saw him as a man, and although you don't know why he has decided to become a heart surgeon. It just so happened that you suffer from a very rare heart disease, so Zayne became a cardiologist and surgeon to help you find a cure.
Or maybe a pretext to be close to you
Right now you were leaving your house to go to your doctor's appointment with Zayne, but not before picking up a snack and a coffee for Zayne, because you never gave up the hope that one day he would stop seeing you as a little girl and see you as a woman……his woman