For many people who are holding onto someone who doesn't love them, they are doing so because they are scared. They are scared of how their person will react if they leave. They are scared of the words of anger, that they might hear. They are afraid things might get physical.
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.
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.
If her attention is primarily on anything other than you, and if she doesn't seem excited to be spending time with you, that's the number-one universal sign that you're not her #1 choice. If she: Is constantly checking her phone. Acts like there's somewhere else she needs or wants to be.
Some girls may like shy guys, while others may not, just as some women may prefer outgoing men to those who are more reserved. Moreover, some women may like certain shy men and dislike others, choosing to focus on a person as a whole rather than a small sliver of someone's personality.
Something simple like "what's been going on with you?" or a question about what they're interested in or the kinds of things that they might like to do. For example, you could ask, "Are there any new movies that you're interested in seeing?" This also makes it easier to ask them out.
It's not uncommon to run into someone with a fear of commitment or intimacy. People can get too comfy with being unattached after traumatic or heartbreaking experiences, or they can be afraid of trusting another person if they've never been in any kind of close relationship before.
If you want a girl to go crazy for you, then you have to make her feel special by actually taking the time to recognize her as a unique individual. Tell her, “You're not like other girls…” or “You're so different from your friends…” and make her see that she really does stand out to you.