Porn might be for some people, not for everyone. Its legal so its out there. You can click off but addictions can be hard to break. Finding an acceptable hobby to replace the porn might work. Do you have hobbies? It sounds like hormones to me but Im not a doc, so, dont quote me. I was about 13 when it happened to me but I kissed girls before that.

The seventh graders were doing things that didnt seem important to you. Thats ok. I think it gets complicated when you mix your emotions into it by thinking either they or you must be wrong since you dont like the same things. Its perfectly ok to be different. It doesnt mean you or they are weird but I processed it similar to you at your age so I understand.