Partner is always late for everything - he has a long morning routine that seems immovable, leisurely breakfast, coffee through a press, ages in the toilet, shower and so on. Problem is, he will not get up early enough to fit in this routine and arrive to places on time. Just had a huge row because he said that it's not important and he doesn't care about being late, it only matters if you're catching a flight. He was meant to be taking me to work as my train has been cancelled, and I ended up being fifteen minutes late. He slept in for work recently, and instead of getting ready quickly and leaving, he was nearly an hour late to start his shift because he insisted on the coffee etc. It's not just mornings - we are always late to meet friends. It really frustrates me, I get very stressed by being late, and my job doesn't allow me to just rock up when I feel like it. AIBU?