Have A Bestfriend

i became bffs with 3 people in under a week more specifically 3 days is that possible or is this just a really fake friendship? btw i never met these people in my life since new shcool and so is it possible or is this just them trying to welcome me out of pity??

This is my heart break ya'll

I still feel sht. This happened a few years ago. Our teacher gave us a homework, an essay about our best friend. Of course, I'm expecting that my best friend and I will write each other. But I was wrong, she asked me politely if it's okay to write her other friend. It's because no one will write with him. In just a second, my body froze, I can hear my heart breaking slowly like the sound of a glass shattering. I knew that if I think about it more, I'll cry so I gave her my answer and I was thinking that it'll look like I'm possessive if I said no so, I said yes.

When I was about to do my essay at home, my mom told me, "so you and your best friend will write each other, right?" It's like the final blow that day, I told her yes and silently cried after.

Yeah, about not having to write with him, I still don't get it what she meant.

Tl;dr
My best friend asked me if it's okay to write her friend instead of me to an essay about "Your best friend"