I also avoid accepting confidences that are supposed to be kept from my partner(s). Sometimes one has to make an exception, but I mostly don't owe people the burden of having to consider whether or not I can talk about something privately.
Originally Posted by SNeacail
Your descriptions of this situation just screams "teenage girl". She is acting like a spoiled teenager with absolutely no regard for the people she claims to love and wants to keep in her life.
I've known plenty of teenaged women who treat people with respect. I didn't even realise that this stereotype existed.