Chill out man no need to get upset, just breath in and breath out slowly.
Sanji is Cool and as a KICKass fighting style but when Nami makes any request he looks like a little dog fulfilling it to his mistress and for some reason i don't think Nami wants a guy that will rollover and play dead if she asks him, i think Nami considers Sanji a friend and that's all she will ever consider him.
Also i said Luffy and Nami has better chances because the anime tends to pull Nami more to Luffy than any of the others, but like i said Before i PREFER that there will be no romance at all.