You have captured his heart when he does for you what he will not do for/to a random person. He behaves differently to you, and his action can confirm that he finds you captivating. More than what he says, his actions speak louder than voice. And the most viable means to know if you have captured him and his heart is in what he does and not what he says only – he might not say much but he will do much for you.

These are signs that you earn a good place for yourself in his core of hearts: