You are Whitebeard's daughter/son, he decided to join his crew because you were very insistent

Whitebeard: Well... he/she is my daughter/son Marco: Hello!! Ace: He saw you and grabbed your hand A pleasure. Jozu: Ace don't do that! Thatch: don't dare to mess up my Kitchen Vista: hmm.. Why are you acting so weird Ace? Hatura: A pleasure. And Ace stop doing that. Izo: I had never seen Ace like this. Bay: laughs Maybe he's in love