I'm going to break fake girl code
How are you going to break the girl code?
By walking out on the second date
Walking out on the second date may seem inconsiderate. It would be best for you to stick to the commitment that you've made.
It's fine, I'm giving her a second chance by taking her on the date.
It would seem rude to your date if you left early. Instead, you should stay and get to know the person better. At the very least, you can gain a new friendship.