The Sadness of Straw

Yesterday, I had dinner with a girl.
The girl said: "My ex-boyfriend is 6 feet tall, with an annual salary of one million. I think you're not good enough for me."
I: Why didn't you say that before dinner? Are you planning to go back to your ex now?
Girl: Not exactly, I just feel we're not a good match.
I: Have you ever heard of the sadness of straw?
It's about a piece of straw that someone temporarily uses to tie a large crab. After the crab is eaten, the straw is used to tie a cabbage, and it feels like the cabbage is not good enough for it.
In reality, this straw is worth less than the cabbage.
What are you trying to say?
What I want to say is, you just got a trial pass once. Don’t treat it as permanent, okay?
You still belong to the lower social class. A wealthy and handsome guy is looking for you. You can’t even compare to me, so do you think you can match a wealthy and handsome guy?