I don't know if I'm honest.
The reasons were logical at the time but all to do with needing to work and having to move away for it.
We wrote to each other for a while and had the occasional phone call but eventually it just fizzled out.
Like everyone now in your past, with the creation of social media it's tempting to try looking for them.
But even if you found them, maybe their lives turned out better than you could have hoped. And you'd be happy for them.
But if life has been hard since you, I doubt your inquiry would be welcome