Tbh it was none of your business to go around telling other people... that's really private information about someone you're supposed to be friends with. Don't think they should've sent you a group message telling you you're always "being a bitch", but then again they may have worded it perfectly politely and you're just giving a biased view.
If you value them as friends, take their comments on board and try and change your behaviour slightly. If they aren't worth the trouble, move on and find some other friends.