My son made me pay for my birthday dinner... what do you think?

My son made me pay for my birthday dinner... what do you think?

I visited my son and his girlfriend during my birthday week. On my birthday, they took me to a nice restaurant for dinner; the food, atmosphere and service were very good. When the server delivered the bill, he handed it to me and my son said, "Thanks Dad." I was a bit shocked, since I thought my son would pay, but I didn't say anything and just paid the bill, with a nice tip. The next night, we went to a less expensive restaurant, and my son paid that bill.

Am I wrong in feeling upset that my son didn't pay for my birthday dinner? I would have gladly paid the second night's bill if my son paid for the birthday dinner.

My son made me pay for my birthday dinner... what do you think?
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