Is NOBODY wrong in the post ? POST : I apologise in advance if this sound like your typical whiny teen drama but please bear with me, I just need to come to my sense because I'm on the verge of panicking if I am the asshole in this situation.

So apparently I  was having a conversation with my long time friend on Instagram about how I've just recently stop hanging out with this new girl because she was "basic and kinda mean for judging people, thought she knew better". Apparently after that, the screenshot of me talking to my long time friend (who has absolutely no connection with the new girl)  were leaked out (think I forgot to log out of my acct on when I borrowed her phone long time ago) and now my ex-friend (aka the new girl) is calling me out, saying that " I spread false rumours about her and that she did nothing to be called like that".  

Personally, I think everyone talk shit but it's reasonable if you say something behind their back in a private chat with a friend that has no connection with the person you're talking about. I didn't tell anyone or spread any rumour in my class/school or any people that know my ex-friend, all I did was talking with a long time friend who's in this case, an outsider on instagram chat so AITA?