It was. Um. Really weird. And
Lucifer took Sam with him and they ended up going back in time and Lucifer was, like. I don't know. Seemed like he was trying to woo Sam with pizza and things. And then at one point, Sam was really cold so he snuggled into Lucifer's side, held his arm, and gave him the puppy eyes of doom going, "You know how much I hate cold." IDEK.
There were bad guys at the building they ended up in, threatening to start killing hostages and Lucifer ended up changing history (this was in the past, remember) and saving all of the people who were supposed to die.
OH, and I've never ever watched Teen Wolf before. But apparently it's been on my mind because the dude from that was in the dream as well. He was trying to convince a girl, who was a werewolf, into being with him. But it turned into him trying to blackmail her, threatening to go after her family if she didn't. And um, no. Why is my brain trying to give me dub-con in my sleep?
That happened before with a Castiel/Sam/Dean dream/nightmare I had. Where it was all very dubious to the point of almost being non-con, but where people wouldn't label it as non-con in a fic...
But I looooooooooved the Sam/Lucifer parts of my dream.
Sam was so happy after Lucifer saved everyone that they went on a road trip. And Sam fell asleep while they were driving because he hadn't slept the whole time they'd been at that building.