More emotionally healthy, huh? How about mid-season 3 where he goes near insane after the trickster lets him out of the loop but kills Dean anyway. Did you see what he did? He didn't move on, he had papers and videos and pictures of the trickster everywhere, trying to track him and kill him, once he kills Bobby (not actually Bobby but could've been) the damn trickster appears and Sam practically begs for him to take him back to before he was killed, and once he wakes on the Wednesday, he gives Dean a huge, heartfelt hug. Almost cries, too. Sam is miserable without Dean, too. He just expresses it as anger.