SWEET BLOOD
Of course, he didn't tell her that.
So that's why he erased Grace’s memories every time they made love. He didn't want her to know that it was just a mere lust, a primitive need and that his longing was nothing but sex. After all, he was cursed to be like that for eternity, to never feel love and genuine passion, that he was made to suffer, and the urge to erase his lover's mind after passionate sex was something he couldn’t help.