Black_bird's reply history at Help.com

Well, you can always just talk to her.
Tell her how you’re feeling; say something like..
“Susan, anytime you’re in a bad mood, or something bad happens to you, I’m always there for you and I listen. But if I tell you something like that happens to me you just don’t listen. Why is that?”

or something like that. She might not even realize she’s doing it.

Ack, the same thing happens to me.
Go to your doctor; they might know of something that can help. There are therapists that help with these sorts of things.

Have you done anything to break her trust before?
She might just not trust easily, or maybe there is something you did in the past that would make her cautious to trust you. You will need to show her that you can be trusted, and more than likely it’ll take some time…

I’m pretty sure it’s athletes.
Well, the fitter you are, the less time it takes for your pulse to reach it’s resting rate.

I’m 14, she’s 13. There’s about a 6 month difference in our ages.

thanks you two, these both really helped alot.

I might end up trying both of your suggestions, I really just want to get through to her.
But I’m not really sure what will work the best, she’s been moodier lately and she’s been getting mad at me easily.
I’m not sure if it’s because of all of this that I already know, or if there’s something she isn’t telling me.

I agree completely.
She can’t write worth anything, compared to him.