Is there a moment that completely disappointed you in your girlfriend?

My childhood friend told me that he was in a relationship with his ex-girlfriend for a year, and he was the one paying for everything—food, clothing, shelter, and transportation.

One day, he picked up his girlfriend from work, and she suddenly said, "You’ve spent all your oil money on picking me up." Then she said, "Let me add a tank of gas for you," referring to "the first tank of gasoline in autumn."

My friend thought that since they had been together for a year, he agreed.

But then she said, "You really want me to add it?"

My friend immediately lost interest, and they broke up half a month later.