I have this crush on a guy in my class and I had this crush on him since 5th grade. We'll I noticed that I had feelings for him one night at a football game that he told me he cared about me, and that meant a lot to me because nobody ever told me that
Ever since then I developed feelings for him and then it turned into a crush and now that I'm a junior in high school and he never knew I think,but what hurts the most is that he already gotten himself a girlfriend and I was too late. I want to tell him about my feelings for him, but I don't want it to get in the way between his relationship with his girlfriend. I know I should have told him before, but It's scary I mean I don't know what he will say or do, or find my expectations to be wrong. What should I do?

He's young... the first thing on his mind is getting laid... so is the second and third... far down the list is a relationship... and even then its only to support the pretext for getting laid.

That's true 99.9% of the time until they are in their mid or late 20's when sex isn't the only thing they think about.

Long story short... forget about it and move on... odds are it wouldn't last very long anyway... thats the reality of being young and dating, people you date today are almost never going to be the people you are with after college, you will be going through an incredible amount of maturing the next 6 or so years... and people change dramatically during them... and to what they like and want... so you learn to recognize what's good and what's bad... because reality will never match your imagination. And as you get older reality overtakes fantasy...

Don't run behind pretty faces. Infatuation will do nothing. Just wait for year or two, this is period of transition when student pass out high school. Focus on studies and you will see changes in yourself and people around. You will know better, what you desire.