Calm and reasonable

My girlfriend and I once had a fight. But we were both generally calm and reasonable; we didn't yell, just argued. We didn't reach any conclusions and decided to put the conversation off because I had to go to work. We were living separately. The next day, I thought, «Well, she's wrong, let her call first.» She must have thought the same thing. It's been 11 years since then, and we still haven't spoken.