Pudding tried to tell Sanji about their mission to make a cake, but quickly impeded herself with mood swings as she went from being in love with Sanji to wanting to kill him and back.
As of now, Pudding is the only female character confirmed to be in love with Sanji, which means there is a pretty high chance they will end up together by the time One Piece ends.
Pudding hated Sanji and only began liking him because he was the first person to compliment her third eye. She is a love-starved person but it doesn't seem she likes Sanji because it's Sanji, she likes him because he just happened to be the first one to do it.
Yes, as the layers of her character unravel, it becomes clear that she does develop authentic feelings for the kind-hearted chef. Despite being raised in a cruel and merciless environment, Pudding finds solace in Sanji’s unwavering compassion and genuine admiration for her.
When Pudding first encountered the Sanji retrieval team on Cacao Island, she recounted her first meeting with Sanji to the team in a flustered and embarrassed way, leading Nami to ask whether Pudding had already fallen in love with him.
The only time Sanji ever treated Pudding differently than he treats anyone else (Nami, Robin, etc.) was when he was projecting 'hope' unto her and that died. He hasn't shown any feelings that indicate he loves her in a genuine manner.
The spoilers for the chapter reveal that when Pudding and Sanji said their goodbyes that “Pudding actually kissed Sanji when she left him.” Fans had suspected this was the case when Pudding asked him for a favor and failed to follow through, but this is now confirm that she did kiss Sanji.
Due to the connection shared between the two characters on Whole Cake Island, many fans believe that Sanji and Pudding would make an amazing relationship in One Piece.
However, Pudding clarified to the Straw Hats that she and Sanji don’t have a “true mutual love” and Sanji was forced to go through with the wedding until the Straw Hats saved him.
