Note: the following post is entirely based on my own opinion. Thanks!
It's crystal clear that none of us are completely our true selves in front of each other and this isn't to say it's a good or bad thing. It's just the way it is and I think it's interesting the more I think about it, especially in the era of social media where we can easily project our aesthetic and what we want people to understand of us with a glance at our feed.
A lot of us have a public profile that we carefully curate, and a private profile (a finsta for example) to post whatever we want without the hassle of organising a look, portraying an image or pleasing an audience. This kind of public and private identity provides an easy understanding that helps distinguish between the two. When looking at public and private identity of the self (your character), the concept is almost similar.
Movies taught me that you go through puberty, have a coming-of-age moment and get a sicc glow up as a result. All of this happens in your teen years.
My coming-of-age moment did not happen when I was in sophomore/junior/senior year but eventually my moment came. When it did come, my body and behaviour did a loooot of growing up.
If I had a look into your bag, I can probably tell what kind of person you are. Lots of receipts, old candy wrappers and tissues? You're probably an indecisive person. No I'm just kidding. Unless... ?
So this isn't to encourage y'all to rummage through your date's bags btw. Don't do that lol. That's obviously invasive and she/he/they'll probably ghost you afterwards because of it. I think knowing what's inside a person's daily bag helps show what kind of person they are. It's not mean to be 100% exact and accurate. It gives a rough idea and it's for fun. What if you find a lighter in their bag? An inhaler? Some pills? A little notebook? A pair of tweezers? Nail clipper? Swiss army knife? These help give little clues and insights to their personality or habits.
When you look at who's a real friend and ask yourself whether you're a real friend, this isn't about who has been the nicest to you or who has done the most for you when you needed help. Sure, the latter does matter but when we're looking at a "real friend", there's more to it.
I'd like to share with you what I've learned :) maybe it might help you?