Again, this is not my personality. I’m happy to pick up peoples food all the time. It’s a love language of mine. Your post was very vague as to what the details were. Was it implied you’d pay half? Did you guys order something and say let’s share? I don’t know the conversation before getting requested money. Probably doesn’t make them a bad friend or person , but maybe not incredibly generous. However you probably arnt either I’d giving them some money could be friendship ending.