Wild guess… but I thinks that's how Rafael (or some another trickster) gonna look for us now. So it's lover there to seduce us, not someone we actually know.
That could be the case, certainly, in which case what I'm asking for may not make sense.
However, Larian has said that Custom Characters are supposed to be improved from D:OS 2 in terms of story integration. I think I heard that the Background you select won't have any dialogue tags associated with it, so if this "dream character" is only going to be there as some kind of lure or trick and your only possible relationship with them is "lover", I'm not sure how to reconcile that with "Improved custom characters".