I’m not sure if I’ve ever fallen in love with a completely imaginary dream person, but I did dream about my ex once years and years after we broke up. I don’t remember what I dreamed about exactly, but I do remember waking from it. The happiness fading as the realization set in that it was all a dream – I was by myself in bed and none of it had been real. I’m usually pretty good at dealing with solitude, but that moment… that was the most intense loneliness I think I’ve ever felt.
Oh, I remember playing Iji! I think that was the first game I played that noticed and reacted if you tried to play as a pacifist. There was at least one unavoidable boss fight when I played it though, as I recall.
Digging back through my old disks, it looks like I actually still have my copy from 2008 (version 1.2, according to the manual.txt file) as well as a saved game from much later when I replayed it in February 2013. That was a while ago!