My gf (f40) and I (m40) have been together for 2.5 yrs. We argue a lot. For me, a big trigger is the tone of voice that she speaks to me in. Often I find her tone and approach unnecessarily negative and aggressive even when we are getting along just fine. I suggested today a movie and she says "no I've seen that it was ***" , I suggest another "No I don't want to watch a WAR movie in the middle of the day" As I've mentioned it is much more the tone than the content a lot of the time. If I bring it up she says that's who she is, that's the way she talks, I'm not going to turn her into "some meek person that tiptoes around". It makes me uncomfortable and I feel immediately deflated. She doesn't see anything wrong with it so how do we proceed ?