<human>: Give me the gist of the text in a nutshell

Just like the title says, she tells them absolutely everything. What we do physically (and "shows them", somehow), all my texts, all the dirty talk, and more. There was this one time she wanted me to write out this scenario for her with a shower (I ended up writing this huge 1,064 word story) and she loved it. I have bad trust issues and a bad history with saying things like that because my past girlfriends would seriously get mad at me for saying anything sexual to them. It was so hard even writing that story, let alone sending it to her. She showed her friends the story and guess what they did? They laughed. She says that it wasn't laughing at me like making fun of me, but a laugh like "oh my god he did NOT just say that" kind of thing. Still sounds like laughing at me. Where she draws the line is apparently anything that has to do with her, she shares. But if it's something that's only me, she'll keep a secret. I tried talking to her about it but she thinks she's doing nothing wrong and then got mad at me for being upset. I tried asking if she can at least run things by me before telling her friends and she thinks that's my way of controlling what she says by making her get my permission. She seriously doesn't get how this is a violation of privacy. I don't mind her talking to her friends about me, I like that she brags. She's literally only said good things. But this has really blindsided me. I mean, what if we have sex and I can't get it up? Will she tell them that, too? Now she's not talking to me because I "picked a fight". Please, I really like her. What can I do?
<bot>: My girlfriend doesn't think anything between us is private despite knowing I have trust issues and tells her friends everything. She does not think this is wrong and refuses to apologize.