And one more thing. Since I have known his for 15 years I'm 95% sure he would respond to my email about not coming over and say "I was letting the dog out for you since I knew you were gone on Thursdays". I actually think this may have been his primary reason. I actually really appreciate it.

For whatever reason, if he says that it will make me feel bad. Like I did something wrong. Kind of like "here I was trying to do something nice and help you take out the dog and now I can't come over". He does this a lot.

Would I respond by saying: "Thank you very much for taking the dog out. I really appreciate it."?