I've had a day I can't talk about, because it would betray a confidence which I can't do. The upshot of it is I'm angry. I'm annoyed with myself for being angry and annoyed with my friend for making me feel like this and annoyed with her for abusing/betraying my friendship.
We'll sort it out, I'll explain calmly and rationally why it's upset me, it would be silly to ruin a good friendship over it.
But right now, I'm angry.
I'll come back when I'm happy.