Sam will still feel Jacob when he looks at him (and boy is that a weird feeling to get from a guy smaller than him, but Jacob remains uncursed), but since Jacob is both nonthreatening and means no harm, it’ll be very light, almost like a tickle. Even Dean will make a more solid impression on Sam when he glances over.
For Sam, searching for the cure was always something that Dean was determined to do. He went along with it, believing for a while that it was for the best. That way, he wouldn’t have to be afraid of the humans, and he’d be normal again.
After some time, he realizes that he’s actually happy the way he is. He doesn’t want Dean pushing himself to find a cure that doesn’t exist (all they have to go on is Celeste’s words about it, which promise the curse is unbreakable), so Sam tells him to stop.
If you want to see the argument between them, check out the part found in Adventures at Bobby’s.
But that’s okay. I’ve got you, after all, and that’s all that matters.
Poor Sam. He’ll have to find a way to let Dean know it’s him. Maybe he can get some of his pencil lead out of the desk and scratch out a message for Dean. It won’t be easy, but mice are crafty little guys. Sam can manage it. Dean will never let him live it down, that’s for sure. And for the next few days he’s got a mouse in his pocket, keeping Sammy safe.
Brothers Apart 