TIFU by not paying proper attention to my dog

So, I have a nearly 2 year old Great Pyrenees. He was gifted to me by my Uncle to help with my anxiety and I'm saving up to get him fully trained as a therapy dog. Now, Max came to me fully potty trained, though not much else, training wise. He's a very good boy about not going in the house.

Now, I had taken him out earlier to do his business. He whizzed four times and did one big poop. I figured he was done and went back inside. Then he started whining. I (wrongly) assumed he wanted to go for a proper, long walk like I normally take him on. But I had just gotten back from a late outing with some friends (we were safe about it, don't worry).Me, being very tired, and outside, being very cold, did not wish to meet. I told him for stop whining and lay down. He kept pawing at me but I didn't want to go walk for an hour in the freezing cold. I wanted to sleep. I am aware, of course, that I'm an asshole but I was gonna walk him after work tomorrow(today)! And I told him that. But he kept whining and pawing at him.

Finally, he couldn't hold it anymore. And he tried! He tried so hard! He even took the time to find a piece of paper and tried to aim! And he did manage to get the biggest chunk there! But the rest landed on my rug. (Ah, consequences.) So I cleaned it up and he looked so sad and mopey and upset that he'd pooped inside, I stayed up for another hour, just holding and comforting him as he hid his face in my chest or lap. Than I filled his Kong with peanut butter spray and gave it to him, as an additional apology for being a terrible person who didn't wanna be cold for five minutes so he could poop.

He's now laying quietly near my bed, snoozing, and I'm making a vow to never ever again ignore his crying. Honestly, I should have known better since he doesn't normally cry, but your learn more every day and I'm taking this as a learning experience on taking better care of my dog so I ensure he has the best life with me possible. He's improved my life so much and I can only hope to do the same for him.

TL;DR: Didn't pay proper attention to my pup. Rightfully got poop on my rug.