you know that they're both are not communicating very well and proceed to misunderstand each other right? Afterall, FL is a spy but later on ..
Spoiler!
odette will start to catch feelings for him and after the revenge happen and bastian learns the truth behind her betrayal he will regret it but it will be too late and after he really apologizes and start to change (sincere this time) then she will forgive him and they will end up together