[TOMT][MUSIC] I can't remember a song I heard on Spotify, the app classified it as similar to Watsky

I'm a big fan of the musician Watsky and I was listening to a "radio station" of his on Spotify which is a playlist which has the musicians songs as well as artists and musicians the app thinks is similar and you'd like.

Well months ago it played a song I forgot to save but I absolutely loved it, I didn't see if it's an actual Watsky song (don't think so because I've tried looking thru all his stuff) or a song by another artist featuring him or just a totally different but similar artist all together.

The song was about a guy reminiscing on a girl he had something with but they grew apart so he wrote her a letter years later to see how she was doing and explaining how he misses her or something but they can't be in each other's lives but he asks how's life's been, etc etc.

I know it's a long shot because I'm not being very descriptive but that's because I don't remember much about the song.

Thanks in advance tho for any help!