Glance up at him until your eyes meet, then smile at him. Get him a soda, beverage, or candy to show you care about him. Make jokes and try to make him laugh–be funny! Smile and make eye contact with him. Place your hand on his knee or ‘accidentally’ brush up against him. With a guy who’s close to you, sign notes to him with “Love,” or “XOXO,” for example, end a letter to him with “Love, Sam. " Make friends with his friends and be sure you leave a good impression on them too! That way they will talk to the guy you like about you.