I've been like that lately, I just get really angry when something goes wrong
I just blame it on being a teenager its just mad!
I don't know if you should speak to them, it seems all a bit to serious to sit them down and talk about it! I'd just say if I get angry don't blame me, its just a stressful time?
Being Bi must be more stress because you want to tell people but maybe you feel like you can't. I think mainly though everyones angry and snappy as a teenager because I am and I get really stressed over the tiniest of things.