Sam's motel wasn't exactly what one would call paradise, but it was certainly a place that he was fine and comfortable with. He definitely preferred the apartment that he shared with Ruby to this place, but it was gonna have to do for now. Sam didn't want to risk losing it in front of her. He was still fighting off his addiction and, with the way that he had been before, he really didn't trust himself around her. He wanted to be around her; Sam had told her as much recently, stating that they could try the whole alone time thing again once they dealt with all that War had thrust upon them. But with everything that was going on now - between Dean dying, Dad coming back, and Adam showing up - Sam kind of had his hands full. He'd find the time to see her before he and Dean took off on their need-a-break-from-Lawrence trip. Sam would make damn sure that he did. Until then, he had other stuff to deal with. Like the man knocking at his door. He had been resting and hadn't expected any company, but there was no way Sam was going to get upset with his father for dropping by. It was Dad. Alive. Sam would sleep when he was dead (again). Dad was far more important.
"Yeah," Sam replied in response to his father's voice, long legs swinging off the old, rickety motel bed he'd been stretched out across. "Hang on." Fingers pushing through his dark hair, Sam tiredly shuffled across the room and reached for the doorknob. He hated to admit, even to himself, that he was half afraid to face the man waiting for him on the other side. Sam and John Winchester had butted heads plenty in the past, but none of what they had argued over had anything on all that Sam had on his shoulders now. End of the world. He'd turned himself into a monster and practically condemned everyone to death; Sam feared that if Dad actually knew that fact, he'd be marching to his door with a rifle in his hands.
Not that he didn't deserve it.
Sam awkwardly pulled the door open and tried for a smile. Even with all that anxiety rumbling under the surface, Sam couldn't deny that it was good to see his Dad alive and well again. "I wasn't expecting you."