Boyfriends family member paid for everyone except me?

I went out with my boyfriend , his sister and her boyfriend. We had ice creams. My boyfriends sisters boyfriend told my boyfriend he’ll pay for him and his girlfriends ice cream whilst waiting in line. I had to pay for my own ice cream. I felt quite awkward. I by no means want a hand out, but this felt quite rude. Am I overreacting here?

Boyfriends family member paid for everyone except me?
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