Oh yes, I experienced this, LOL. I was pretty quiet in school, especially middle school, and when I was in 6th and 7th grade I was in *love* with this guy 1 year older than me. I remember attending a school dance and he was dancing with his girlfriend, I honestly hated her. I didn't even know her, I just hated her for dancing with *my* man...LOL! He never even knew I existed or that I had these feelings for him.
There was another guy in high school too. He was 2 or 3 years older and I knew EVERYTHING about him. He probably would have freaked if he knew what I knew about him.
Ahhhhh....Sometimes I miss those young crushes