. Find small ways to touch your guy to show him that you’re interested and leave him longing for more physical contact. For example, nudge him a bit with your elbow during a conversation or touch his forearm a bit when you're speaking. If he touches back, it’s usually a sign he's interested in you as well. While you want the guy to know you’re interested in him, don’t do anything that you’re not comfortable with. If touching him feels like too much at first, just try standing close until you feel more comfortable. . Fit little compliments into the conversation. Make sure that you mean what you say, though, because he’ll probably be able to tell if you’re just giving him a line. Look for moments where you can work what you admire about him into a the conversation naturally.  When you first begin flirting, you can use somewhat generic phrases. For example, you might say, "It was so good seeing you yesterday!" As you get to know him more, work organic compliments into the conversation. For example, if he mentions that he's wondering what to wear to a sporting event over the weekend, you might something like, "You always dress really nice so I'm sure you'll find something great." Smiling is a good way to come off as flirtatious. During a conversation, work on keeping a smile throughout. You can also try to laugh lightly at his jokes and smile more when he says something sweet or interesting. Eye contact can also help. Try holding his gaze for a few seconds and then glancing away. It may seem strange, but people are attracted to those who subtly mimic their body language. You don’t have to imitate everything he does, but mimic small, subtle gestures. For example, if you see him cross his legs, cross your legs too.  Try mimicking hand gestures. If he tends to wave his hands around as he speaks or to make a point, try doing the same. If he is leaning in towards you, lean in towards him too. You may want to send your guy a physical note, but a flirty text can also work. Don't make it outright flirty if you haven't established that kind of relationship, though. Just show that you're thinking of him.  For example, you might send a quick text that says, "Just wanted to say hi! ;)" You can also text or send a note with a quick question. For example, "How was your day?"

Summary:
Touch him Compliment him Smile and make eye contact. Mimic his body language. Pass him a note.