everytime someone hugs you they start growing, everyone starts off normal sized, make sure someone doesn't hug you too long, that can lead to the whole world being destroyed, they don't know about that, only you do, you'll stay normal size no matter what happens, also the tighter the hug the faster the growth happens, there isn't a limit to the size that everyone can get to, the only way to get someone back to normal is if their crush kisses them