Help with the akwardness???

ok so im going to hershey park with my freind this tuesday. she asked if i could hang out with herand i said yeah but she also said that one of her freinds who is really hot is gonna hang with us too. problem is, i dont even know him. her boyfreind is also gonna hang with us too, so when they are like together as in sitting next to eachother and stuff, what should i do with this other guy to not make it akward?? im that pretty, so im sure he wouldnt wanna flirt and stuff. at least i think he wouldnt......