Is he in the wrong or me?

so it was 11:00 made my boyfriend and his daughter breakfast I was not in the mood for breakfast so decided to have a packed a crispy he shouted at me I said I was acting like a child for eat crisps for breakfast in front of his daughter I felt humiliated And was apologise in all day but was I in the wrong
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His daughter 24
Is he in the wrong or me?
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