Why dose he keep staring at me?

I recently joined a band through the music school I go to.
This is my first time actually being in a being in a band so YAY!

There's 3 girl not including me and one boy.
But the boy keeps staring at me... I see him staring at me through the corner of my eye, and when I look at him he always looks away really quickly.
I haven't noticed any of the girls looking at me though...

We meet up once a week and I've been going for three weeks.
I'm shy so I haven't talked to any of them
So could it just be because I'm new?
Or is it something else?
Why dose he keep staring at me?
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