Wow. This is incredible! I love how eerie and yet somehow still intimate this is - Sam's obviously trying not to look at Lucifer or react to him, but he's not exactly pulling away, and Lucifer's all up in his space practically leaning against him while Sam just kind of accepts it... The look on Lucifer's face is gorgeous too, not all mad-scientist-y like some people draw him but calm and collected: the expression he's got is almost tender but a little bit wicked, and I think the whole scene really captures the essence of their relationship. Like they know they shouldn't care, but they just can't quite help themselves. One of my favorite SPN Lucifer depictions ever!