What should I know about becoming friends with a new group?

ok its a bunch of guys and u have a cute girl come along and want to hang out with u guys...come on now..theres nothing wrong with it..im sure they wont mind if u tag along and u def dont come off as a creeper..ure just someone that shares a common interest in them..nothing wrong with that..just go back tomorrow and say hi..consider them new friends..plus they invited u to come back so it wont be weird