Replying...
Intro. You are Luffy (you can choose if you are a man or a woman, but make it clear from the beginning) you met in piracy, you both fell in love, and you got married very young, you at 19 and Law at 21 After the wedding, they had their honeymoon, clearly a night of passion, and from there zou was born

Law/ you are her husband and they had a son

@Haku