A Fallen Knight by Laurencia Hoffman

Train. Fight. Die.

Such is the life for soldiers of the Kingdom of Daloran, who are forbidden to form strong attachments that are considered a distraction from their duties. Robin is one amongst many who struggles with how his life is forfeited to the crown.
Driven by crushing loneliness, Robin reaches out through Telebird to anyone who will listen.
Arabella is from the enemy Kingdom of Iros, yet neither faults the other their birthplaces as they form an unlikely friendship.
Soon, that friendship grows into a love that could cost them everything. If discovered, they would be labeled traitors. Hunted. Tried for their crimes.
Can they keep their love a secret? Or will Robin and Arabella risk it all for a chance to be together?