<human>: Could you distill the essence of the text into 1-3 sentences?

I've been dating my current girlfriend for a year now and we've recently gone through a slightly rough patch. I've found over that last month or two that I get annoyed by small things she does wrong more easily than I should. Not things to do with the relationship but menial tasks like reading a map wrong when finding us directions, or taking too long to get ready in the morning if we're going out for the day.

I've had two previous long term relationships, one that had a fixed length of 9 months as I was moving so we'll ignore that one. But the first and longest of 3.5 years I had the same thing happen as well. After a couple of years I started to get easily annoyed or disappointed over small things like if she would call up to order takeout and then bumble the order and have to repeat herself over, or other small silly things like that.

Is it normal to experience this kind of thing in every relationship (the end of the 'honeymoon phase') or could this be more a sign of incompatibility?

I'm at a bit of a crossroads with my current girlfriend in that we get along great most of the time, have similar interests, enjoy each other's company, and have similar life goals, but if I'm starting to treat her less well than I did when we first started dating what is that a sign of? Are we incompatible and I should move on or does it just mean I need to work harder at the relationship and appreciate her more?

I've heard that one thing that can be most damaging to relationships is contempt, and I'm worried it's contempt that is making me irritated at these little things she does wrong.
<bot>: started getting easily annoyed at girlfriend, want to figure out if we're incompatible or I just need to work harder at the relationship