If a guy likes you, hell make an effort to talk to you. If his voice seems to trail off when the two of you are talking, its not likely he is interested in you. But if his voice is deep and present, and asking questions about what you are saying; he is probably crushing on you too.

What guys do when they have a crush on you?

Usually, when a man has a crush on you he will make you a priority in his life. He will go out of his way to help you or spend time with you. He will start paying attention to your interests in an effort to know more about you. He might even act nervous or show off around you.