I lost touch with my best friend and I miss them deeply

We didn't fight. Life just happened — moves, jobs, relationships, the slow drift nobody plans for. I scroll their social media like a ghost. I type messages and delete them because 'hey, it's been a year' feels awkward after how close we were. I miss them in a way that surprises me, like losing a piece of my history. I'm not sure if reaching out would be welcome or weird. Has anyone successfully reconnected after a long silence?