Okay, now... would I announce it in CC? Yes I would announce it if two conditions were met.
1 - I was certain we were actually "together" and she also acknowledged it. I don't do assumptions with matters of the heart.
2 - If she was cool with it being announced.
As for what if we broke up, well, that's life. I announce the good in my life, I'd announce the bad too. I wouldn't leave the forum over it though.