Galen knows things, these things are: I am Syrena, I am a really fast swimmer, my world's form of government is perfectly normal and healthy, I have a Half-Breed girlfriend/future wife. 
 the is of what Galen doesn't know is even longer. this list includes but is not limited to: murderous plots to overthrow the monarchy, that his brother's new wife is a fraud, and his ex-girlfriend is still alive. 
 Nalia is alive......