your little secret with your bestfriend

Why on earth you don't want to share your story about you and her with me?

is it to dangerous if I know it?, 

or are there any promises between you and her about not talking to me?

and I would like to ask you about this:  

Are you enjoying your time with her much more than when you are with me? 

because I feel no good about you and her time. it is sick!