Are guys intimidated by beauty?

Well, perhaps you are a bit quiet and that mixed with your beauty gives people the impression you are aloof. I don't know that for sure, but that is possible. Don't worry about guys approaching you. Start by making an effort to smile more, be more friendly, act interested in others, and approach others. You have to make an impression of being friendly, and maybe approaching groups of people will be a bit too awkward for you, so start with girls. Girlfriends can be a great link to guys, so just promote your friendliness for a while, and the word will spread that you are not only beautiful but nice, kind and approachable.