He knows that he has many faults, his empathy for other people is very low if nonexistent. He can show some sort of compassion, he can show sympathy. But he can not exactly feel as they do. Perhaps that is what makes him so calm and ready to help them. He doesn’t fear if he can save them or not. He tries and it is no real loss to him should he not be able to save them. But yes... things for him are muddled. He has not found love. He can not understand it. Nor can he really feel for them when they are in pain. He feels selfish for this. Dumbledore's hard blue eyes enter his head and he grips the mug stronger still.