Dean's brows rose, and he might have made some appreciative sound at the idea of food. So it was for them; he'd only been joking after all. The waist squeeze was appreciated, and the older Winchester might have slipped in a soft pat to Dinah's bottom before letting her go to far.
"Research. I'll eat, you look shit up." Both boys were good at research; Dean just usually got someone else to do it for him. He was pretty good at other languages, at least he could figure some things out. And, he wasn't bad at finding the stranger small needles in a haystack full of words and figures. He may not have been as good as Sam, but Dean was pretty useful even where books were concerned.
"Sound good?" He gave Sam a firm pat to the shoulder. The larger of the two Winchester boys wasn't going to have to go through whatever he was going through all alone. Dean would be right there with him.