Alright George I am honestly in the same exact position as you, I've been with my girl 9 months and we always have those stupid little arguments like any couple does. A few months into our relationship it got so bad we took a break for a week without talking and it actually helped, I don't suggest that tho. What i do suggest is be the bigger person and the man of the relationship and pretty much let her say whatever she wants to you when your arguing and just sit there and take it. It's not being a bitch it's being smart and saving you from a long ass night of fighting. Today i did the mistake of actually arguing back with her and it's annoying, girls and their god damn attitudes.