Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: My sister and I are on a holiday abroad, and we’re taking turns paying for meals we have together. Today we were planning to meet up and go somewhere together after my mourning tour ends. I met her at a cafe and she’s already had lunch. When the waiter brought the bill, she told me to pay for it. I was so surprised I didn’t say anything and just paid for it, but it upset me and made me feel used. I didn’t order anything and literally sat down 5 minutes ago, so I feel like forcing me to pay for her food was unfair. Am I the asshole?

being upset because of having to pay for my sister