Yes.
I miss someone I had a crush on, on and off, for several years. Not while I was with the man I thought I'd marry. But when that relationship splintered (on/off/on/off hell) the crush feelings came back. Anyway I told him right after the seventh and final split that I'd fancied him but I knew it was impossible and could we be friends? I meant that. Apparently it came over as a great big come-on. He said No angrily. Maybe he thought I was just rebounding - maybe I was. Dunno. I thought we'd sorted it out but then he blocked me on Facebook.
Then he just vanished from the places I used to see him. Then he got a girlfriend, which shattered me into even smaller pieces. Apparently that's over now. I heard all this at third hand - I haven't seen him to speak to since February this year.
You know what, I don't miss him - not him, the actual human being. I miss the person I wanted him to be. That sounds like psychobabble but it's true. This lovely friend, lover, companion - he was never that. But I miss the loss of that daydream. I miss the person I daydreamed he could be.
I probably still miss my ex, deep down, but oh that was horrendous and it's taken me a year nearly to get some distance from it. I am terribly lonely.
These ghosts I am in love with.