pkpk was crying last night and now her eyes are swelled up.  Tears are strange; you cry when you're happy and when you're sad.  This discussion of tears reveals a terrifying plot!
cried different tears when you 
were either happy or sad.
si lloraras lágrimas diferentes según estés triste o feliz.
si llorarás diferentes tipos de lágrimas según si estás triste o feliz.
se houvesse diferença entre as
 lágrimas de alegria e de tristeza.