Dating couple gossiped about
First, it’s not your boss’s place to get involved with this, because it’s not interfering with your work; it’s a friendship issue.
Asking your boss to mediate that would basically be asking her to mediate a social situation, and you can’t do that.
The fact that you felt like you were doing the right thing is a mitigating factor when it comes to judging intent, but it doesn’t change the fact that there are repercussions to decisions, and one of the repercussions here is that she doesn’t like what you did and doesn’t want to share her personal life with you (somewhat understandable, given the circumstances) or be work friends anymore.
Again, I don’t want to slam you for any of this, but maybe looking at it this way can change the way you’re viewing the whole situation.
I reported it to our boss immediately because we’re good friends and we share things but also because I thought it was important that she know what was happening with coworker.
Well of course my boss couldn’t keep a secret and told a number of people in and outside the organization, many who were less discreet than me.
I’m worried this will damage our professional relationship and I feel like I shouldn’t be punished for reporting relevant information to my boss.
Well, here’s the thing: You’re not being punished for your boss’s lack of discretion. I don’t want to come down hard on you for this because you said you feel horrible about it already.