You know these thing,you see them but ignore them. Read along and pay attention to his actions 1.Listen to what he's saying. If he likes you, and he's nervous or anticipating the chance to get closer to you, he'll probably start talking about himself. Many times, guys feel the need to prove themselves, especially if you talk about another guy in his company. Gauge his interest in what you have to say. It really doesn't matter what you say, it's how you say it that can tell you a lot about his level of interest. So, try this: Lean in and whisper, with your shoulder barely touching his and say something softly. To heighten the impact, steady yourself gently by brushing your arm across his back. If he moves his head closer toward you and either touches you back or maintains eye contact, he's interested in you. If he isn't interested, he'll probably step back or be very unresponsive. A really disinterested guy might even try to shoo you out of his personal space!