What do you think of me not tipping a waitress and leaving a note for after she was flirting with my boyfriend?
It makes sense that you would be upset. What else do you plan on doing?
Maybe we should make a complain to the manager and tell her about our disappointment about the service.
I still think that you should leave something for a tip. That is how they make their money!
I'm a stubborn asshole, they can make some money next time.
It's appropriate to always tip a server. Some waitress intentionally flirt with guys because they want a better tip, without realizing how disrespectful it is. It's appropriate for you to do what you feel is best in this situation.