Keep your gaze on the horizon while walking. Doing so makes you appear more approachable and sociable.
Don't be afraid to be expressive through your eyes. Widening them in surprise, or narrowing them when you're skeptical, shows that you're engaged and paying attention.
Making eye contact is a great way to show you're interested in a girl and to judge her interest. Whenever you feel it's appropriate, try meeting her gaze for a moment. However, don't stare too long as this may make her uncomfortable. Try to meet her eyes for as long as you feel is appropriate to get her attention.
“Making eye contact and holding it just a few seconds longer than a casual glance causes him to take notice of you and start to wonder what you may have meant by that,” says Lieberman. “It's the cool 'silent flirt' that can make him want to know more.”
Don't make it too smutty though; something like "I couldn't stop thinking about you and your sexy smile" does the job. Keep the conversation going by asking questions about her and showing interest in her answers. The way that you start turning her on is by dropping plenty of little compliments.
In a date-based scenario, experiments have shown that women are more attractive to men who are non-judgemental, observant, and respectful. When you make judgemental remarks or spiteful remarks on the first date, well, the chance that they would even pick your call after is very slim.
Be aware if she only talks to you when she needs something.
If you only hear from her when she needs help with her homework or a project, or she needs a ride somewhere, but she doesn't have time to talk to you or she's always too busy to hang out, she might be manipulating you and not truly interested in you.
Even if she wants to be in a relationship with you, making some decisions quickly can make her anxious. Your love interest might be someone who loves to take it slow. If you don't observe her personality, you may appear as being too forward, and that can make her ignore you.
One of the best ways to ignore somebody is to show them that you're disinterested in communicating with them. If a girl is bully with you, don't stoop to her level. Instead, try not to engage in distasteful conversation. Be as formal and polite as you can so that she'll have no choice but to leave you alone.
Be impudent, a little cheeky and slightly irreverent when you're talking to her. Of course, don't go overboard with your boldness and don't start becoming arrogant. Just be playful with your words and if she finds it funny, she will definitely flirt back with you.
In his book he examines five key styles: polite, playful, sincere, and traditional. Take the quiz here to see which one you are. There is no right or wrong way to flirt, but according to author Jeffrey Hall there are five different styles.