spoiler anyone?
U r welcome.
DeLov keeps Seira with Gerard since she has the ability to stabilize Gerard's condition. Gerard is a descendant of the extinct 'Pian' tribe (if my memory serves me well) albeit the pink(red?) eyes. This tribe have certain abilities that varied for each person. Hence, deLov is using Gerard to outs the current king and put Gerard to the throne.
DeLov never love Seira and didn't have an affair with her but used her as his rumoured mistress to hide Gerard existence.
I did stopped reading this so I can read more, only to end up with a cliffhanger!!! Whyyyyyy