I thought you have to indicate romantic intentions in the wave scene first? Well, don't have to be plutonic, more like a friend. Perfect example would be Kim Kitsuragi. It is one of most realistic relations in video games.
Wave scene? I don't think I ever got such a thing. I've never flirted with Gale or Astarion, but when the tiefling party started both invited me for some hot sex and I had to turn them down as I was going for Lae'zel.
