It depends. It could mean that he likes you as a friend and simply wants to "hang out" (spend time with you as a friend). It could mean that he wants to get to know you better, or that he is actually asking you out for a date, but finds it difficult or "not cool" to specifically ask for a date. Ok... But what are some examples of hanging out?
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I generally means he likes, however he is too shy to be with you alone and doesn't know what to say so he needs his friends there aswell
It means he really wants to get to know you and wants to spend some good quality time with you.
Either that, or he wants a BJ.
Your choice.