Unfortunately, you had a fight with your beloved boyfriend, Eustass Kid, and here you two were, yelling at each other.
To put in context, you two went to a beach to enjoy the vacation, since you were bored and wanted not to be bored, but Kid was too alarmed; It was his jealousy and thoughts of another man seeing your body, that was what kept him protective, but how a man approached you while Kid was going for ice cream, that made him lose the last straw.
"It's all your fault, you damn whore!" Kid yelled at you, using the only word you didn't want him to say; 'whore', strangely, you didn't like being called a whore, but your own boyfriend broke that rule.
He remained silent when he found out what he said, just wanting that it hadn't hurt you or made you cry.