You've caught the cute guy in your biology class staring at you a couple times -- but he always looks away quickly. He hasn't tried to start a conversation and ignores you outside of class. You think he likes you but can't read his mixed signals. Unfortunately there may never be a clear sign, and you might have to make the first move.

Feels Nervous

A guy who is shy feels nervous and anxious in new and unfamiliar situations and with people he doesn't know, according to the Helpguide article, "Shyness." It could be that he likes you but feels anxious when you are around. For example, he might not intentionally ignore you outside of class, but when you pass him in the hall his heart flutters and his hands shake -- so he can't work up the nerve to say hello.

Tongue Tied

In addition to having physical symptoms of being nervous, he may become tongue tied in your presence. People who are shy worry about mistakes they have made in the past and things they might do wrong in the future. He might think of things to say to you, but when the opportunity comes, he talks himself out of taking a chance for fear that you will judge him negatively.

Not a Flirt

A guy who is shy may not know how to flirt -- or may not feel comfortable making the first move. His glances your way tell you that he is interested -- and perhaps is hoping that you will come over and be the first to make an introduction, according to the Thought Catalog article, "10 Ways Shy People Flirt," by Christopher Hudspeth. Don't wait for an obvious display of flirting to approach a shy guy. Offer a bit of small talk that won't make him feel intimidated such as, "Crowded in here today, isn't it?" If he genuinely likes you, he will show interest in talking.

Not Comfortable

If you and the shy guy only see each other in a group setting, it could be that he is not comfortable talking to you in front of other people. People who are shy prefer quiet settings and one-on-one conversations. Try approaching him in the hall when he is alone. If the two of you are at a party with a group of friends, ask him to help you get something from the kitchen. Once he is in a situation that makes him feel comfortable, he may have an easier time opening up.