You pay attention to the little things. You remember what they like and what they don't like, you know what makes them happy and what makes them sad. And it's because you don't just listen to them- you understand them. You value their thoughts and appreciate the fact that they're opening up to you. You are affectionate and kind and extra thoughtful towards the people you care about, simply because you want them to know, at all times, just how much they mean to you.