You knew she was infected. The slight change in her mannerisms, her sudden distaste for the foods she used to love. That it wasn't really her anymore. But you didn't tell anyone, did you? And you still followed her into that dark, quiet corridor. You didn't resist when she pushed you against one of the facility's storage lockers, or when it started to kiss you, arms around your back. Or when the extra limbs followed. You simply kissed her back, greedily, even as an extra set of limbs wrapped around you. You probably didn't know why you were doing it, either.
But it did. When they posed the question, they did it in unison.
"Do you want to join us?"