john: bobblehead
He didn't have to search forever. After finding no leads, I understand. But he would have at least tried to figure it out. He would do SOMETHING, not flap his hands around about a girl and try to be normal.

The ONLY reason Dean didn't try to get Sam out was because they had agreed beforehand. They spent an entire season with Dean bitching and arguing about it before finally conceding and fulfilling Sam's wish at the end. Different situation.