Well, it depends on the nature of a guy whether he likes a talkative girl or not. If the guy is an extrovert, the chances are high that he will like a talkative girl. But if he is an introvert, then he might not be a talkative girl that much. So if you are a talkative girl, but the guy you like is an introvert, then you should talk less. Don't be quiet all the time as it would turn things weird, but speak a little less. That's it.