So one of my friends mentioned a story about another close friend and I asked her about the details and she said no. I decided to ask the close friend about the story and the friend that mentioned the story got angry at me because it wasn’t any of my business and “she would’ve told you if she wanted” 

To simplify it, as it might be hard to follow; friend A mentioned story about Friend B, I asked Friend A about story, Friend A said no so I asked Friend B about the story and Friend A found out and got mad at me because it wasn’t any of my business.