What do you think about me standing a girl up?
Do you want help with standing up the girl?
You can stand her up also for me. But I can do it myself.
I think I'll stay out of it then, it is your mess and not mine. I don't enjoy things like that. I support you but I don't agree with you.
I just heard it's a popular term right now and because of you I have no interest in doing it anymore.
It's good that you do not want to stand the girl up because doing so would be hurful and rude. It's best to respect the plans and commitments that you've made so that you don't seem unreliable.