My Friend Made A Disclosure Of Sa To Me. I Promised To Stay Quiet. What Should I Do?

Tonight my friend told me that the person who hurt me also hurt them, and told me how. They only told me because I promised them I wouldn t say anything and that they trust me implicitly. They were in pieces. I am in pieces, I feel so angry and so guilty. I don t know what to do. I know they wouldn t be able to emotionally manage if I forced them to say anything or if I told anybody, but I m not sure I can hold this. I wasn t believed about this person hurting me, but now I ve found out... My Friend Made A Disclosure Of Sa To Me. I Promised To Stay Quiet. What Should I Do?
https://www.myptsd.com/c/threads/my-friend-made-a-disclosure-of-sa-to-me-i-promised-to-stay-quiet-what-should-i-do.55461/