Guys are generally not good at gaging a woman’s interest and often to one extreme or another. Either thinking more is happening (seems most common) or underestimating the girls interest and missing the singles. Women also like (generally) to be pursued, but also left wondering what the guy is thinking. Women want to be excited and engaged by the guy. They also want a guy who is living his own life and has a life the woman wants to be part of. Also there is a fine line between playing games and building excitement and mystery into your relationship.
Be confident, be present, listen to her, always be yourself, and most importantly have fun and enjoy the moment even if it ends. Getting a girlfriend doesn’t mean you stop dating her. There is no finish line.