Now I know this isn't in PUA terminology but I'll add my 2 cents as more of a "natural".
I always say "can't believe its closing...blah blah blah...I'm having so much fun....blah blah blah.....I'm not ready to go to sleep...let's go and hang out at my house, I've got wine in the fridge...."
She will inevitably say something like "oh but then I have to get all the way back to my house, it's miles away/there wont be any taxis...blah blah blah"
The perfect killer to this...."you're welcome to crash at mine, you take my bed, i'll sleep on the sofa..."
I'm paraphrasing but it hasn't failed me yet. You know you're not going to sleep on the sofa, she knows you're not gonna sleep on the sofa but it doesn't matter and you can both act surprised that you ended up sleeping together
