Waring: Spoilers through out the Series.
We all know about Sophie, but have we ever wondered why she has feelings for the cinamonroll known as Fitz? It's because he is the only thing that makes her not give up when she is captured by the never seen. I quote: "Teel aquamire eyes. Fitz's eyes." I'm not sure if that's the beginning of the sentence, but you can check for me! Fitz and Sopie are meant to be. It is proven through out the series: Fitz constently steadys her, and is always helping her. Yes, Keefe does like her, and we know Dex does by the unfamous kiss. But we have to make tough choices in life, and chosing who you love may be one of them.