I pretend to smoke with my girlfriend because of my insane anxiety
What does it mean for you to pretend to smoke?
It means I pretend to smoke, but actually I don't because it would make me anxious.
If you don't want to smoke, then tell her that. There is no reason to lie about it.
How dare you call me a liar and judge me!
You are lying to your girlfriend by pretending to smoke. You shouldn't feel like you're being forced to do something just because you're with someone you love. If they truly love you then they'll be understanding.