I only just met this guy, but the second time I met him he introduced me to his friends. guys haven't liked me in the past so i'm hesitant to say that he might be interested. is he?

As I see it, you seem very new to relationship's and crushes. But don't expect a lot from this boy, as it seem's like he like's you for you're 'looks', as a lot of young boy's want one thing, a girl's body, and nothing else. Their starting to realize that girl's about their age are starting to look more of an adult, their body's are starting to develop and they like that. But he might've noticed something about you, like you're laugh, or you're personality. Most guy's notice that a girl look's cute when they smile or how they talk to other people. So he take's interest, and start's talking to them.

But like you said, you're new to all the dating, flirting etc. Just take it slow, don't try and flirt with him, when you see him. Just stay as friend's and he might like you 'more' than a friend, he might ask you out later on in the friendship. Hope this helps!