I found myself in that exact situation last year. I’ve had other college friends that I’ve lost touch with. That’s a natural thing that happens, and it’s difficult, but it’s a gradual thing, and it feels inevitable. This was different. I was closer with these people than I was with the ones I’ve gradually lost contact with. We talked via text nearly every day. We were a part of each other’s major life events — birthdays, Christmases, weddings. And then one day it was just over. Not a gradual falling out of touch, but an instant severing of contact, with not a single word of explanation.
But that’s fine.
Like you, I haven’t been able to write them out of my life entirely. I’m not sure that I want to. I still think of them from time to time, less frequently with each passing day, but even so. I have to assume they’re not thinking of me, because it’s clear they didn’t value the relationship as much as I did.
But that’s fine, too.
I’ve moved on.