" I want to apologize to you, Nikki. Not just, ‘hey, sorry,’ but really. Apologize.” He paused, either to let her absorb it or to find his way, then he went on, “This is all still new to both of us. You and I came to each other with full lives, past baggage, careers, the works. Both of us. And this trip of mine, this was the first time since we got together that you’re seeing what my real work is like. I have the advantage of having gone on ride-along, so you—I get your life, inside and out. Me, I’m an investigative journalist. If I’m doing it right, I’m spending big stretches of time in places nobody else has the balls to go and under conditions most reporters wouldn’t put up with. That explains why I fell off the radar on my story. I told you I might before I left. But it’s no excuse for not calling you when I got in the clear. The only explanation I can give may sound flimsy, but it’s the truth. When I come off assignment, I have a routine. I sleep like the dead and write like the devil, in seclusion. It’s the way I’ve always done it. For years. But now—I realize something’s different now. I’m not the only one involved.
“Now, if I could take back the past twenty-four hours, I would, but I can’t. What I can do, though, is say when I look at you now and see the hurt in you—the hurt I caused by being insensitive—I see pain I never want to bring to you again.” He let that sit there, then said, “Nikki, I apologize. I was wrong. And I am sorry. "

― Richard Castle