ANSWER:

It is not permissible to expose your sins nor do you have any right in asking about her past. What you did was very wrong and sinful!

You can’t do anything about it now except repenting and asking Allah for forgiveness.

I got to know about my friend’s past and I advised her to repent and to never fall into the haram relationships.She was very guilty and was not accepting that she was into haram before.To make her feel better,I told her a gist of what wrong I did in my past. Now I am feeling bad that I told her a little of my past too. I repented to Allah and my friend has repented too. But still its killing me.