im pretty shy and yesterday i went to my 3rd high school dance. it was the first time i grinded a girl because i had my friend make me gain courage to do it. now i feel a lot more confertable doing it then before. but what i did was a gently grabbed her waist and then she started grinden me. we didnt talk or anything either. some of my friends said that approach was fine but others say i was supposed to ask her to dance first. what is the correct way to approach a girl if i want to grind her.