u/CmdrShepardWasHere

I'm trying to recall a sci fi series I read around 2010-2013. At the time it was a duology, with two main POV characters (female and male). There was a caste like system where characters were born with a shape + colour on their face. I believe one of the core plot points revolved around one of the main characters being born with 2+ shapes (implying the caste system breaking down).

Some additional things I remember:

• The shapes were geometric (square, circle etc.)
• The two main characters were initially on opposing factions I believe
• The second novel I recall mainly taking place on a space station.
• There was romance between the two main characters, but I don't remember if that began in the first book