Our oldest regularly says things to my husband about how he does or does not treat me. Things like "oh wow dad you're actually TOUCHING mom!!! Woo-hoo! It's about time!" Or when I am leaving on a trip she'll say things like "c'mon dad... kiss your wife.. what's wrong with you. Mom's going away for a weekend and you are like shaking her hand!" It's kind of funny and it proves my point to him that they do need see things and notice what is going on or not going on.
Point being - I guess that we need to be careful around our kids about all this stuff. What they see, what they assume, and what they don't see. They are usually smarter than the average bears too. How we make sure we don't put our kids between our Rs is the tough part isn't it!
