7. Dilated pupils
It’s a proven fact that the eyes can give us away when we actually do not want them to. There is a reason why most cuddly toys have the large round eyes and the reason is that when you are attracted to something or someone your pupils dilate, becoming larger, and when you don’t like something, your pupils contract.
So if you notice that his eyes keep dilating, that’s certainly a sign that he adores you and likes everything that you say!