Just read the scans, and it's pathetic imo, for Sanji to just abandon his friends like that coz he can't go one mile without thinking with his dick for once is just... idk what to say, lol. I mean, prostitutes?? Jeez.
My only hope for Sanji is that he didn't seem like his usual self when he's thinking of women... I mean, last chapter, he was hopping on with heart eyes and shit, but when he said he "won't give up finding prostitutes" in this chapter, we just see him smiling, and having no heart eyes... he didn't look like his usual perverted self.
There's probably something else in Sanji's mind but he didn't want to worry the others...