Perhaps you didn't notice her eyes wandering off during your conversation. Maybe she was accidentally pushed into you and you mistook her grimace for a smile. Whatever the case may be, avoid further embarrassment by knowing for sure whether a woman is flirting with you. The key to figuring out if a woman is interested in you is to look for very clear and direct signs that she is flirting before you make a fool of yourself.
She Smiles at You
If a woman smiles at you whenever you catch her eye, you've likely piqued her interest and she's gauging yours. If she continues to smile a lot when you are having a conversation with her, it's also a sign she is definitely flirting with you. However, if she is giving you tight, polite smiles that are brief and few and far between, she's not flirting with you. She's likely thinking of a way to extract herself from the situation.
She Stares at You
With the smile also comes direct eye contact. A women who is flirting with you from across the room will try to catch you eye and give you a brief but lingering stare. She may look at you for a few seconds, look away, and then do it again. If she's smiling as well, she is giving you the green light to come on over and talk to her. When you do get to talk to her, it's a good sign she is still flirting with you if she maintains direct eye contact with you during a conversation. If you catch her glancing at your mouth more than once, it's a very good sign she's wondering about how you kiss.
Sometimes body language is tricky because a woman may just be trying to have a conversation with you and is not trying to give out flirting signals. If a woman is flirting with you, she will seem really into your conversation, turning her body toward you, tilting her head up at you and listening intently. Most importantly, if she touches you a lot, she's flirting with you. Take it as a good sign if she pushes your shoulder as she laughs at something funny you just said, or touches your knee or your hair. A flirting woman will also lean in toward you during conversation to show you that she is really listening to the conversation.
She Compliments You
The bold woman who is flirting with you will tell you flat out that she thinks you are cute, while giving you all of the other flirting signals: smiling, staring and touching. Don't hesitate to ask her out as she is giving you every invitation. Most women will have a more subtle approach, complimenting your clothes, hair or something that you mentioned in conversation. Don't forget to compliment her as well if you are interested, otherwise she may think you are self-centered. If you receive a compliment and she seems really into you, she's definitely flirting and hoping you will ask her out.