User blog comment:Kaido King of the Beasts/Chapter 855: The Big Sleep/@comment-29757981-20170210154441

Always thought that Luffy would already be KO by the time Sanji found him, as a face-to-face meeting between the two would be kinda awkward for Sanji right now. That said, it doesn't necessarily mean Sanji has decided to return to the crew. He might just want to power Luffy up so that he and the others can escape while he goes through with the marriage as planned. Either that or they'll plan something together