p.s. i am a very shy girl.
Most Helpful Guy
I don't know anything about you except you are shy, so I will have to assume that is the cause. If you are really shy, then men often will misread your body language. You may just be nervous because you like him, but the guy may take it that you don't feel comfortable with him around because you don't like him. Or if you are too quiet, he may think you aren't interested in talking to him.
Most Helpful Girl
Maybe those boys are shy themselves, think you're dating someone, or simply aren't interested.
You can try approaching the guys but since you're shy, you might want to send a friend to see if they're interested in you.