the dude was heinleys spy from the start i think he started messing with the marraige the moment he knew heinley love naveir not sure hainley knows tho
They probably were banging pretty often since he gets weak every time she is really happy and he is often weak in the mornings soo they after glow be deadly yo
This point i think the universe is spiting the prince i think at some point he is gonna march into enemy territory to surrender and the just give up for no reason
I would understand more if she talked to him first and he refused to say anything then join forces with the other guys .. And not make it her first choice