2. Eye contact
This is something that you cannot rely on 100%. Nevertheless, pay attention to it. Do not avoid eye contact if you like the person. During a conversation this merely means that you are listening to the person and that you are fully focused on what he is saying. If you noticed that eye contact lasts longer, then the guy is likely to be genuinely interested in you. On the other hand, a short eye contact can be as expressive as a long one. It all depends on the person’s temperament and character. Some guys might like you a lot although their eye contact will be rather short.