Just to add on to that, if you went and lost to the Warlock and then took the choice "to become a girl", your cock is no longer usable and thus you would also be unable to see that scene. So "becoming a girl" prevents you from becoming her girlfriend, ironically enough.
I tried that route to be the headless, or holding head creatures girl friend, but for me it never worked.
I also tried with usable cock.
tried to fuck them, let them fuck me, attempted many way's, I got and achievement finally but have no Idea what got it.. Big mystery to me that one.
does anyone know where to get the dick cover thing for the paladin in the church?
Yes you can get it at the fort, then as said find the pale ladies, Vampire's, but the end result is not very satisfying at the church. I am not sure it is even finished, it does not feel like a finished quest to me. Because you still have the cod piece, and it still does not fit.
Or at least that is the way it was for me.