My girlfriend and I broke up a 15 year long relationship approximately one year ago and while I did enjoy having time alone back when we were together, after s

My girlfriend and I broke up a 15 year long relationship approximately one year ago and while I did enjoy having time alone back when we were together, after so much time I still can't stand being alone as the default. I miss the sharing, the laughs, the little moments (good or bad!) that seem insignificant but that turn out to be core to the relationship, that no friend seem to be able to replace. While I do enjoy some activities briefly, everything I do retrospectively seems like an attempt to escape and drown out the drone of loneliness. Being able to share is such a catalyst to any experience that things feel sort of pointless: does a falling tree make a sound if no one's around to hear it? Maybe I'm still getting over that break up, maybe I should just fake it till I make it. Really, I don't know.