You understand that there are certain places in public that you cannot go because your BFF doesn't want to run into any students.
You pretty much always know exactly which co-worker upset your BFF during their prep period on any given day.
You know so much about their students that you feel as if you've met them personally.
And you are so familiar with the names of the students that cause them pain that you've started to have negative feelings toward everyone named "Justin."
And even though you've never seen them, you have a vivid picture of them in your mind.
You know that when you hang out there's an 87% chance that they'll be grading papers.
You're always acting as a guinea pig for a new lesson plan or class project.
They'll stand up for you and use their teacher voice.
And you've learned to accept the fact that you will never, ever be posting a picture of them at a party on social media again.
You'll become so well-versed in teacher lingo that you'll feel as if you also went to school for education.
You're aware that your days of shopping for promiscuous tops are long gone...
...because they're replaced with teacher-appropriate slacks and shirts.
You know that their schedule is different every single day, so you usually wait for them to call you.
Especially since you've made the mistake of calling them during class when you thought it was their free period.
And on the rare occasion that they DO text you during the school day, you feel like you're doing something illegal.
You've been to your fair share of garage sales and Goodwill stores with them trying to find things to fill their classroom with.
And that doesn't even begin to cover the space they have in their house dedicated to teaching.
You're used to trying to squeeze a whole year's worth of socializing past 10 p.m. into two months during the summer.
And secretly, deep down, you feel a little better about the world every day knowing that your best friend is inspiring and shaping young people.