There can be some cooking later, once they're done here. Sanji is always happy to keep Luffy's hunger satisfied, in any way it manifests itself. He smiles too after hearing that laugh so close that he almost feels it against his chest.

"Guess not. You really know how to make someone feel wanted."

And it's something Sanji has desperately needed all his life. Not the sex, although that is a wonderful plus, but the confirmation that he's not unlovable. To drive home the point of his appreciation, he lets out a broken moan when Luffy leaves a hickey on his neck. It's for the best that he wears shirt with proper collars, but even if he didn't, this is a mark of ownership that he would wear his pride. 

"I, aah, I'll do it more then, Luffy." 

Sanji sticks his hand into the thick fullness of the other man's hair, alternating between massaging and gently scratching. He loves the silky feel of Luffy's hair between his fingers, and only after a few more moments does he tug on the hair with some more force, silently asking Luffy to lean back so he can kiss him again.