I'm going to pretend to share a girls political views so we can keep sleeping together
Why do you want to lie to her?
Because she is hot and I like her.
You shouldn't lie about your political beliefs just to get into bed with someone. They will eventually discover your lies.
I don't care. I don't want to keep dating her after we have sex.
She could be really hurt if she finds out you were lying to her this while time. You should be honest and let her decide to still sleep with you or not.