Turns out I used to be a jerk

Hey I just had my mind blown.. I don't even know what to think right now.. When I was in elementary school I was bullied everyday. And just about ten minutes ago I was reading through my facebook conversations from years ago and there was quite a few girls from out of town who had added me and I don't know why but I was a complete asshole to them and I was just completely blown away by my messages when I read them because every message I sent just seemed like a different person. Now back when I was younger I struggled with depression, mood swings, anger management and more because of bullying and now I'm finding out that I was doing the same thing to people who were being NICE to me and quite honestly idk what to do right now that's why I'm looking for advice.. I was thinking about messaging these girls because even though it was like grade 4 they still had feelings right? But I'm also scared that they'll get mad at me or be sad because I caused them to remember what I said and the last thing I want to do is cause them any more emotional pain than I have. I also just want to say this is nothing like me now I've matured alot and would never be so blatantly rude.. one girl called me hot and I told her that she wasn't and to fuck off.. I just can't even begin to understand what would make me do such a thing and im actually getting quite depressed over reading some of these messages (I still struggle emotionally).. Please help I'll take any advice even if you feel you need to insult me I deserve it:(

No, you don't need insulting Chaser..all you need is encouragement to keep on the path you're on now. You stated you've matured and so have the others so get messaging and say what you need to say....it's that simple...and you could be pleasantly surprised what comes back at you.