Is it normal for siblings to be so intimate with each other?

DavidMSilva
So, my twin sister and I (15) are very attached to each other and we basically do everything together since we were born that it became pretty usual for us to see each other naked, get dressed in front of each other, use each other's belongings and etc. And I didn't really think about it as a problem until I went to a friend's house last week and got to see how restrictive and private he is towards his siblings, totally different from us. Of course all families are different and everybody is raised differently, but in your opinion, is it normal for me and my twin sis to be so "comfortable" with each other?
Is it normal for siblings to be so intimate with each other?
10 Opinion