What Do You Think About This ? When Nami Say She Will Never Forgive Him It's Almost Show Nami Have Feelings For Him Plus Also Nami Being Tsunedre With Him During His Presence This Is How Nami And Sanji Dynamic Works Plus If You See Despite Sanji Say That He Didn't Want To Risk Thier Lives And Nami Life Is Personal Issue Nami Confirm Everyone Help For Sanji And Even Nami Own Declaration Its Definitely Show Devotion Before Wci Not Only Sanji Almost Say Many Times Nami To No Give Backup To Him Nami Still Not Ready To Leave Him Behind And Forgot Fear Ex Eneru,Kalifa Fight ,Doflamingo ,Zou ,Big Mom Teritorry Despite Sanji Say No and rejecting help from Her it's Show Nami same Devotion for sanji before and still even after nami personaly hurt by him
Okay, Nami not forgiving Sanji is a misinterpretation by the reader. (Actually, Nami already forgave Sanji, there's no need to overthink it. It was the hug they exchanged in Whole Cake Island, the looks they gave each other, more than Sanji saying I also love you in front of Pudding, and these two didn't even care that Pudding was there. I feel a little sorry for her, but we all know that Sanji and Nami have something special between them, and it has evolved little by little, subtly, since Wano. They have gradually started to change, and look at this.)
For example, in this episode of One Piece, chapter 1772, y 1773 the Straw Hats are in danger, and Sanji is more worried about Nami. It's noticeable why you referred to him as Nami-san, and the others are secondary; it depends on traditions. It's funny that Sanji knows Nami was with Robin, but he only mentions Nami, not Robin. That's a change; before, he only mentioned Nami and Robin, now it's just Nami. There's an example: Sanji has more devotion only to Nami and loves her romantically. And what he said to Marie in Wano about loving all women is a bit curious. If that were the case, he would have devotion to all women, not just one.
And then in the next chapter, Sanji keeps mentioning Nami, and of course, the one in trouble was Robin. Sanji freed her, but he didn't stop to ask her how she was, if she was alright... Nooo, he just went to Nami. And look at this subtle detail, how Nami's pupils glow when she hears Sanji's voice. You even notice one of Nami's pupils is an inverted heart lying on its side.

















