It's a trend M-rated games are following lately. Showing the deed / foreplay cutscene. Ehem...Metro Last Light ehem...
This is something I don't like mixing in my videogames especially not in Fallout. I'm fine with the screen just fading black when you proceed to have six in the game.
Remember when you lost the arm wrestling against a Super Mutant in FO2 then you suddenly end up in the guy's room and when you check your inventory you suddenly have a ball gag in there? That's the way these six scenes should be done.