Why is my girlfriend so serious about everything?

Anonymous
She couldn't sleep after having a nightmare. When she woke up she told she dreamed she was kidnapped by a woman, after she said that I said that I would hit that woman only if she was very good whit weapons or know martial arts, in that case both of us would be dead.. Then an argument come after that and she end up telling me she would set aside her values for the ones she love ( I told her I wouldn't hit a woman unless she wanted to kill me, etc, and that I wouldn't renounce to my values for anyone). Practically she kept getting surprised by the fact that I wouldn't punch a female kidnapper... It was a silly fight, and I am fricking tired of discussing over little things like that, I never told her I would leave her alone.
Why is my girlfriend so serious about everything?
2 Opinion