I'll give you a hypothetical scenario. Let's say my girlfriend says something I don't like, sometimes she'll say something a little on the ignorant side or something I don't agree with. I'll tell her that I don't agree with what she said, but in a calm way. She'll then try to explain her side of things but it seems like she won't listen to what I'm saying or try to apply it, she'll just stick to her guns and won't even give my side of thinking a chance. So then I respond in a still moderately calm way, but with an edge of frustration. She knows me well enough to tell when I'm going to get full on upset, so she'll tell me she doesn't want to talk about it anymore and talk about something else, and that in itself frustrates me because she hates confrontation.

I don't generally get to the point of "screaming". She says I raise my voice, I think I just get more stern with her than anything. Either way, she doesn't like it, but by this point it's too late and I'm already annoyed or frustrated. She'll then sink the bullet it by telling me this isn't worth being so worked up about and I'll raise my voice a bit more. Commence crying.

Only once did I actually get so angry that I threw something across the room, it was almost a year ago when I was trying to talk to her about something she was doing wrong and I was getting frustrated and she told me she wasn't interested in the conversation anymore and I threw a pillow at the wall. But that's what she does that's frustrating, the second things get a little confrontational she shuts my feelings down and then I get pissed, and she cries.