So I was sitting at a restaurant and one of my guy friends comes from behind and gives me a hug and he came over to my side and he did it again. Why would he do that? And sometimes he will be really close to me and other times he would ignore me? He didn't do that before but now he is doing it more often and our friends are noticing he is way younger than me. Is he being friendly or flirty or is he showing he has feelings for me?