Can someone spoil me?

I'm hella curious bcs from what I've seen Ain who is Ian is seeking revenge because of Anatold's family? I remember someone mentioning that Ian was assaulted by one of Anatold's relative (father or brother, I'm not sure) so yeah, revenge. He's trying to make Anatold fall in love w him? How is dick riding the solution? I mean I'm all up for it though, and someone did say that because Anatold is so green flag that he actually changed Ian to one too? Can someone give me an example of that!