Learning how to flirt if you are interested in a geek girl or geek guy may be futile; in my experience, trying to flirt if you're a geek is often quite traumatizing, especially because an equally geeky target is more than likely to not pick up on it. Often the verbal or romantic equivalent of a two by four is necessary in such cases. My SO says he finally realized I might be flirting with him when I rambled on, once, about how nice guys and sweet guys, such as Gary on Early Edition, are underrated but actually the best, and how I thought he probably was one too. And I first considered that he might be interested in me when I noticed that every time we hung out, he mentioned what a good time he'd had. In other words, I think compliments are the best--sincere ones, which shouldn't be too hard if you're attracted to someone!