In one form or another, our self-beliefs and self-concepts tell us that there is something wrong with us. That if we allow someone to see who we are inside, they will reject us and leave us. So we present ourselves in a way that spins who we are to make us more socially acceptable. We wear a mask.
The downside of hiding or cloaking yourself is that no one really gets to know who you are really are. You are are all alone with how you feel inside. This is the one of the reasons that loneliness is so rampant in our culture.
So if you want to be close with someone you have to be willing to risk. You EXPOSE who you really are to them. One piece at time. You have to trust that they are strong enough to accept and support who we are. And trust that you are strong enough to heal yourself and reconfigure your life if they are not able to. You will feel a bit vulnerable after you expose something real about yourself. Although uncomfortable- that is a sign that you are on the right track.
And... you have to be willing to DISCOVER who they really are. You invite them to expose who they are. When they start sharing something about themselves, you listen and encourage them to continue. Your only intention is discovering and accepting who they are. Ask inquisitive questions. Do not judge or try to solve anything for them. They will be watching closely to see if you are able to accept them.
So if you want to feel close to someone, risk exposing who you are and discovering who they are. Life is much more enjoyable when you have someone to share yourself with.