Guys and girls can be friends, however, in my experience any close friend I developed of the opposite sex, I fell for. Though soon after I would decide I did not want to risk losing them and the interest would snap off, and the friendship remained intact and quite close. So it just depends on how you handle said friendship. Not all boy x girl relationships end in romance, and most of the time, or from what I have seen, girls tend to get all giddy at the prospect of dating someone they were friends with, and things get shot all up, it just depends on whether or not you are willing to back down from feeling interested if such feelings occur, or if you would rather give a relationship a shot.