I just had my 10 year anniversary last month, anyone that tells you its easy is full of sh*t, anyone that tells you it gets easier is full of sh*t, anyone tells you they never argue is full of sh*t.
I was told something years ago by an old sage that is completly 100% true and is always in the back of my mind especially when arguing, he said "son three thirds of women are nuts", it took me awhile to work this out but so far its been the best advice ever