Sorry, but what made you think you had the right to "out" her to anyone? Sexuality is such a difficult thing to deal with, and she obviously doesn't feel able to share it, or she would have. Telling people things like that can have implications, and I expect it will spread now.
Times are changing for the better (and about time, too) but that's not to say that it will be easy for her to come out. She will be worried about telling her parents and about her wider network finding out.
Instead of gossiping you should have spoken to her about it and offered your support in what will be a difficult time for her.
It's not up to you to feel weird about her sexuality, it doesn't affect you. I understand that your culture might make things more complicated, but with that being the case I find it even worse that you chose to go spreading it, when you know full well that people may disapprove.
Do everyone a favour and mind your own business. I can't stand people who gossip, it's just wrong, and can have devastating consequences in some situations.