Actually tho it happened to me quite a lot when I first started working, I just naturally assumes certain things and expect people to understand how I think. For these two, it's possibly pride and just how close they are to assume that the other side should totally get what they want to express. Tbh, it does take time lol cuz they arent just dating anymore. Also as you can tell they both got a temper. Lol I got kinda serious when you are just ranting.
They are both being stubborn and pride is def a big aspect usually but talking will most likely lead to better scenarios and resolve issues way faster, you might even end up with a stronger bond so its a win win... If done right and both sides are willing to be vulnerable of course. ヾ(❀╹◡╹)ﾉ~
How do you expect her to read your mind? Its always the same issue. Speak and share your concerns, have communication, the honeymoon fase can only do wonders for a while, they are still very new to everything so its understandable but it just annoys me that people expect others to READ MINDS?! ヽ(`Д´)ﾉ