Flirt with her. Give her compliments, joke around with her, be playful, and throw in casual comments or jokes about you two in a romantic way. For example, if she makes a comment about a bad date in her past, say something like "Our dates would be SO much better than that" with a smile.
Look for lots of eye contact.
Prolonged eye contact or a lot of quick glances in your direction indicates she's interested in you. To see if she likes you, try holding her gaze while you're flirting. If she seems uncomfortable and looks away quickly, she's probably not interested in anything romantic.
In a research project, Jeffrey Hall, Assistant Professor of Communication Studies at the University of Kansas defined five flirting styles; playful, traditional, physical, sincere and polite.
They are interested in what you have to say and ask you lots of questions. They laugh at your jokes, even the lame ones. They initiate physical contact. They try to find space where you can talk more privately (this does not always mean sex, but it often means they wish for more quality time with you).
One of the most unmistakable signs a girl likes you is her reaching out and planning to meet more often. It doesn't have to be about dates! She may ask you to tag along while running little errands, grabbing a quick bite, small hikes, and adventures, or even become her workout buddy.
She laughs at everything you say.
Even though your jokes might be infamously corny, she'll still find them funny when she wants you to know she's interested. If she's engaging in conversations with smiles, giggles and playful banter, there's a good chance she's attracted to you!
Look at how she acts when she's around you—open body language, eye contact, and physical touch are signs that she could be interested. See what she says during a conversation; if she likes you, she might compliment you (or even tease you).
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.
If someone smiles a lot when they look at you and connects eye contact with smiling, it is usually because they find you attractive. They might also make fun of you and tease you, or try to make you laugh. If someone's into you, you make them nervous. Their heart will beat rapidly from being around you.
Innocent flirting is a lighthearted and playful form of social interaction that involves casual, friendly banter, compliments, and teasing without any serious intent or expectation to pursue a romantic or sexual relationship.
Spontaneous Touches
You might notice that they casually touch your arm, shoulder, or hand during conversations. If a person makes the conscious effort to engage contact with you, even casually, they may be flirting or attempting to get you to notice that they are interested in being more than just friends.
Put your hands around her waist from behind.
Touch her gently so you don't startle her. If you two get really comfortable she might even let you slide your hand down a little lower. Once she's comfortable with you putting your hands on her waist, grab her and swing her around. Then, she'll be facing you.
You will often witness a spark in their eyes when they are looking at you or having a conversation with you. They will smile at you as if you are art personified. You can tell if someone likes you if you can sense them looking at you even when you are pretending not to notice.
Make eye contact when you're talking to them, or hold their gaze for a couple of extra seconds when your eyes meet in the hallway. You could playfully tease them, or send a flirty text after school to let them know you're thinking about them.
If your crush feels they can open up to you about anything, they probably like you. It is true if they tell you about things they don't usually share with others, such as serious problems at home or work or something they don't share with others. If they trust you enough, it's a sign they are attracted to you.
He leans toward you during conversation.
People tend to naturally lean toward people they like in conversation, according to Battle. If the guy you like tends to lean his face in closer to yours while he's talking to you or listening to you talk, that's a good sign that he might be into you.