How to become friends with someone who you know?

I'm acquaintances with the one guy but I want to be more of a friend to him. This is really important to me because when he was hanging out with some of my friends, I wasn't invited. What should I do?How to become friends with someone who you know?
start by becoming closer friends to his guy friends. once you start hanging with them, you will get closer to him. also, any girls he or his group hang out with, youshould start trying to hang with them more.How to become friends with someone who you know?
That sounds like a tough situation. I would suggest trying to talk to him more and find out more about his interests and hobbies. You could then try to invite him to go and do something he enjoys with you. But don't be too in-your-face about it, because that can make people feel a little bit overwhelmed.
one day if u happen to see him and he's not with anyone just say hey what was ur name again? then introduce ur self and walk off. then everytime u see him say hi. then work ur way up.