ADJ-GRADED 硬心肠的;冷酷的;无同情心的 If you describe someone as hard-hearted, you disapprove of the fact that they have no sympathy for other people and do not care if people are hurt or made unhappy. 硬心肠的;冷酷的;无同情心的 [disapproval]
You would have to be pretty hard-hearted not to feel something for him.