<human>: Chances are good you're actually kind of being an asshole. Us guys are assholes to other men all the time, and we don't make it into a big deal. 

But when your partner gets mad at you over something you perceive as small, starts blowing things out of proportion, acting out in ways that all the dudebros on reddit love to label as "crazy", chances are good she is trying to show you that you are accidentally being a dick. 

She is reacting to how she is feeling, and you're probably trying to tell her what you did over and over again. This is you saying "Nah, don't feel that way, cause I didn't really do anything wrong." This also says "You are not allowed to feel the way you're feeling right now." This is not a thing you would do on purpose to someone you love, right? She gets to have feelings.

So it's very simple. Ask her if you did something that is making her feel the way she is feeling. listen to what she says, and DO NOT interrupt her. Understand that this is how she is FEELING and this is probably not going to line up with what you did, said, whatever. She is allowed to have these feelings. Now tell her that you are sorry for how she is feeling, and that you didn't mean for your actions to make her feel this way. 

Advanced mode: ask her if you can do something differently if this situation comes up again that will make her feel better.

And you're done, argument over, +1500XP and you level up. I have been learning how to do this over the last 4 years, and my wife and I went from hours long arguments where we both felt like crap to 10-15 minute discussions about how we are treating each other.

So be a man, and take the first step. Eventually you will see that she does exactly the same thing for you, and may have been doing it for years already.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: She probably isn't crazy, but reacting to you invalidating her feelings. You can stop, and your life will be a hell of a lot better.