Yes, Luffy met Boa Hancock again after the events at Fishman Island and this reunion took place during the Return to Sabaody Arc, which itself presents a significant storyline in the whole ‘One Piece’ series.
So, explaining the story little more, Luffy and his crew were separated for long two years to undergo intense training and become stronger until they reunited at the Sabaody Archipelago. Boa Hancock, the Pirate Empress, had been deeply infatuated with Luffy since their first encounter, and she was thrilled to see him again.
During their reunion, Hancock’s joy was evident, but Luffy, ever being the straightforward and oblivious character, reassured her that he wasn’t planning to marry her. Despite this, their bond remained strong, and Hancock’s unwavering support and admiration for Luffy continued to be a source of strength for both characters.
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