Wrong Bride

I inexplicably traveled back in time to a novel I wrote and became a cannon fodder female supporting character. In order to survive, I married the villain. He turned out to be my modern-day boyfriend. Unexpectedly, just this small change made the story develop in a completely different direction. My arrival has changed everyone in the book. To solve the mystery, there is still much in this world that I don't know. (Maybe the male protagonist has a little less role, and the female protagonist has more roles with the original heroine. I don't want the heroine to travel through time just for the male protagonist, and a lot of it is to empathize with the characters in the novel. All the characters are not perfect.)