Don't you think honesty stains friendship ?

I went to my best friend, and told her in all honesty what I did not like about her behavior with people, and the things she does to me that I don't like; like showing off and things, and we had a conversation where I told her everything I didn't like and she told me everything she did not like. We really opened up to each other.
But since that day, there is a really strange atmosphere when we're together, I don't know. It wasn't like that before that conversation. Can't really explained. I still love her to death, and I'm sure she still loves me , but there is this strange air when we're together now....