Im the ExGirlfriend of a Soldier

Id been reincarnated as the heroine of a predictable thirdrate harem novel I decided to live as the heroine and enjoy my comfortable life with the hero but what kind of romance is this Having a soldier for a boyfriend there was a constant stream of women surrounding him and all kinds of incidents occurred So now I was trying my best to live a normal life I broke up with my boyfriend and married a man Id met during a blind date but What My husband is the demon king