Unfortunately, it was a little too little too late. You had the chance to plead your case and make it good, but you were angry and hurt. Understandable. But when offered an olive branch dont swat it out of the hand, take it and run with it. Instead you stonewalled and demanded an apology first before you would reciprocate. Bad move. Your nonpology was just that.
I hate to see these things happen, but they are so easily taken care of by swallowing your pride and admitting defeat and starting over on the high ground.
I have a young one in my house close to your age, and yes that one when confronted will bite back at their own detriment. Fortunately in their case I have to accept later terms of endearment, forgive and forget. Unfortunately for your case, you had the chance and threw it away. The people who run this site dont have to forgive or forget, but on the rare occasion that they offer a truce, please dont look the other direction.