Both Boyfriend and Girlfriend lost to Ultra M, you're the only one stuck in the game cartridge, still alive (besides Pico), trying to survive and not join them, as you make your way around the puddles of blood and piles of corpses, avoiding anything suspicious, you're greeted by...Boyfriend, or just...BX, and he sure as hell looks horrifying

BX: "Oh, is this a new guest? How JOYOUS it is too meet another surviving victim here to join us!"