Yes I think this is normal for an enfp.
Notice the common thread in the ENFP answers-
1. I was alone in high school or felt very lonely (a lack of Fi connectivities and lack of learned Fe interaction skills)
2. Fuck them if they dont want to be your friend (a Te defense mechanism)
3. Be independent or choose to be alone, rather than deal with what amounts to rejection. (an INFJ shadow to build the ultimate Fe doorslam)
We end up choosing to be alone rather than being hurt by having our core-our Fi-rejected.
In first grade it was noted that I was very talkative and friendly and did not understand the concept of other's space. By third grade I was no longer speaking to other kids. I could not understand how to relate to them and it hurt so much to be rejected that I chose to be alone instead. I had no friends-except for the other occasional social reject until my 10th grade when the intps found me. I read books and eventually worked at a stable rather than have friends.
As an ENFP we have this inner brilliant core of affection, emotion, caring, warmth, even devotion that seems to be the way Fi processes emotion. It is above all authentic and overwhelming at times. As Ne dominants we dump that outwards into our world. However most people dont want it honestly. It is like being emo solar flared. Even our enthusiasm, our gestures, our facial expressions all can overwhelm others. We violate not just their personal space but their emotional space.
Fe seems to set up very distinct emotional boundaries based upon social acceptance of the other party. We annialiate those boundaries because we never see them. Then we are pushed outside of the boundaries and excluded-thus rejected due to what defines us.
Suggestions:
1. Find the other dorky people-the social misfits at your school. Likely they are INTPs, other ENFPs, and so on. You will naturally fit it better there
2. Recognize that you are unique, you are beautiful, but that you will not always be accepted. It wont take long to identify those who you overstep with-mostly ESTPs and ESFPs at your age. They are very sensitive to social expectations, thus will reject you more quickly if you are odd. Avoid trying to be friends with them-later in life this will change but for now, dont bother.
3. On the inside-always be true to yourself-however externally learn moderation in speech, gestures, expressions. This is hard as ENFPs will choose extremes-either complete connection with Fi or utter isolation with Fe walls. Try to find a middle ground-learned Fe basically. Menatlly picture smoothing your outward appearence to about a four foot radius around you. Like a shower curtain barrier. Inside of you, be real. In that four feet, be calm and collected, composed, but refined and precise. even robotic. Only people you really, really trust get to come inside the four feet radius. Others have to stay out until they earn your trust.
This sounds totally crazy but it will allow you to fit a little better.
College will be much better as there you will have more freedom to find your own social group and find others who think more like you.