Guys and girls help!!!?

I really like this guy. I want to hug him a certain way that will tell him i really like him! Boys- How would you want a girl to hug you, to let you know she was interested?? and what feels good but won't make him freak out!!?Girls- i only get to tell him bye when other people are around.So, i can't like grope him or anything lolwhat should i do??