Gauges info (for missions) :
Fill = the green gauge at top (cum/pregnant fill)
Lust = pink gauge around the heart (mindbreak / brainwash)
Choke = the left red gauge
Choke Time = the right blue gauge
Girl's resistance = the purple gauge at the bottom
Arrousment = the heart gauge
Edge = all within the pink circle around the heart (fills when keeping her at high arrousment + holding touch but not moving much)
In help section, the 2'nd help tip explains how each gauge is named.
I might need to show this more clearly.