She is a wizard. He is a normal human. She knows that these sweet moments will soon be just a dream.
Iman has respected and obeyed her grandfather Charles and his teachings all through her young life and for this reason Charles trusts her to always be responsible and keep the wizard code of conduct close to her heart, especially the ruling whereby a wizard can never fall in love with an ordinary human. He even gifts her a magical red diamond to keep all humans away from her.