Why do Capricorn boys do this?

You should make it clear with a straight face who he is targeting, you or that girl. If he is targeting you, it means that this Capricorn is wary of you and doesn't want you to know what they are talking about. If you explain to that girl, you want to know that their conversation is not pleasant, which is a sign of concern for your performance. Usually Capricorn doesn't care about other people's opinions, but it's different in front of the person you like. They don't want people you like to know that they are happy with others, so they will pretend to be indifferent. Actually, I don't think this move proves anything. Can be observed for a period of time. For more details, please pay attention to the subscription number constellation file (ID: xingzuo 0 1 19).