Urgh, what's up with unconfident guys?

there's this guy, who I thought was pretty cute. he didn't talk much and was kinda awkward, so I put in a lot of effort trying to get him to talk. when he finally did open up, he. is. CRAZY. well I just mean that he's all "oh haha, guild wars is so cool lmao". he got pretty awkward and nerdy, and I wasn't that interested in him anymore. I just feel bad though cause he's asking why I'm not talking as much. what should I do?
Urgh, what's up with unconfident guys?
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