That Sam was part of the reason for those family issues was what worried him. Though, really, a shit load of those family issues existed long before Sam had ever come into the picture. He knew that. But he still felt a little bad about the whole thing.

"I'll let my building security know, too," he said, looking over the parking lot. "I know it's probably not likely that he'd come all the way up here, but..." There was no telling with Lucifer. And Sam wasn't taking any chances with his mate.

Still, he smiled at Dean's insistence and chuckled. "I know you do. I just...Yeah, I'm worried. I didn't entirely expect that when I ended up mated." He paused, then, "If he comes after Gabriel here, you know I'll kill him." Because Sam was not going to stand for that. And there were laws that would protect him.