People can fall in love with a shadow

I watched a science experiment where some random men were shown projected shapes of women, except they weren't actually women, they were just shapes. The men didn't know and fell in love with the shapes. Maybe it was simple infatuation but they said it had the drive of desire to an obsessive degree.

It reminded me of classic horror and crime cinema, where women would often emerge or dwell within dark shadows, then spring out like cats and spiders.