Movie - Girl Pretending to be Drunk on Date
This is I believe a rom-com from the late '90s-mid-2000s, it opens with the main character going to meet a girl on a blind date; when he shows up, she's already had a few drinks and is falling down drunk. He escorts her home on foot, and when they get back to her place, she reveals she's completely sober and it was a test (he passed).
Google searches all just come up with Promising Young Woman now :-\