Hi have have a boy and popular question please help me?

So i am 11 and kinda pretie and popular but o have really low self asteem. I talk to like evryone and stuff. My bff is in the popular group. I just dont know where i fit in. She hangs out with alot of boys cute popular boys but when i do i get all aquward and stutter or become shy. What should i do to be able to talk to them? ps they are not the jerky pops nice and cute ones. Also their is this boy in my grade. He is nice and popular but ALL of these girls like him and stuff sooo what do i do????????