Is AUTHOR wrong in the post ? POST : So when I (M 15) got off of work(yes I have a job at 15), I gave her( F 15) a call since it's been awhile since we've seen each other. Well anyways, we talk for about two hours, then she drops how I make her feel like shit all the time because I flirt with other girls and how I'm a narcissist because whenever we plan to hangout I always put my schedule first. 

Now here's where I'm confused. 

The girls I "flirt" with are close friends that I hang out with at school. We dont do anything and we never make advances on each other because they're also in relationships( my ex knows all of this). On top of that, mainly because I was curious, after she broke up with me I asked her if she cheated and she said yes. I was kinda shook afterwards because I stayed loyal, but she did shit with another guy and broke up with me for talking to my friends. 

Finally, the last part about my schedule makes sense, but I specifically changed my schedule to match hers. It would be like, "Hey my Saturday is open. You?"
She would respond with something like, "No only my Friday is".
Then I would find someone to cover my Friday shift, so then we could hang out.

So am I the AITA? Because I'm hella confused. 
Btw sent from phone, so that explains formatting errors and shit. 