Did Pudding Remove Sanji Memory?

As for why Sanji never made any mention of this, it seems that she used her Devil Fruit to actually remove Sanji's memory of the kiss. The final part of the spoiler seems the most heartbreaking as she ends up crying alone.

Why did pudding make Sanji forget?

As part of her mother's plan to assassinate the entire Vinsmoke Family, Pudding deceived Sanji into believing she loved him, taking advantage of his attraction towards her as well as his own vulnerable state of mind (caused by her family taking his friends and Zeff hostage).

What happened between Sanji and pudding?

Sanji and Pudding are friends that met through a forced marriage between them by their respective families. Whilst Pudding was secretly conniving with her mother, Big Mom, to have Sanji and his family killed, she ultimately was won over by his sincere kindness towards her and aided him and his crew's escape.