As a muslim, how can I stay comfortable around classmates? Help?

Yeah honestly I agree with the user above that 13 is way too young of an age, even for non-Muslim girls, to show off "your figure" to boys. And what figure? Honestly, lol. I can relate though, my middle school was full of seductive, teasy girls too. But if you are faithful I think you can make the right decision =) Even though I'm a boy I generally avoided swimming places and stuff, I just didn't think it was right for me.