How to get close to people?

No one person can feel close to every friend he has out there. There are some you feel naturally closer to because somehow, you click with each other. Know who you like hanging out the most with and then take it from there. Don't be nervous at all when you're with them, for it shows. Just have pure, non-worrying fun with them and they will grow to like you back naturally as well. Have confidence in yourself and people will naturally want to get to know you more. And you cannot want to grow closer to your friend with you getting uncomfortable with getting too close, that's illogical. Decide on what you want for yourself and stick to that goal.