Emma Lange's "The Cost of Honor"
Almost impossible to like or admire the hero of this book, unfortunately. He is a sullen, arrogant jerk and spends pretty much the entire book in the sulks because he decided to marry the girl he inadvertently raped, thinking she was a whore when he found her in his room. The heroine manages to stand up to him and her adversaries, such as his mistress, pretty effectively, though.
A story by Mary Balogh, The First Snowdrop, has similarities with this one in that the hero is forced to marry a girl he raped, thinking she was a servant who "wanted it", but in Balogh's story, the hero has to work very, very hard to redeem himself for his actions and his neglect of his wife after the marriage. In Lange's story, the happy ending comes on the same day that the "hero" has a tryst with his current mistress! I don't see much hope for the guy's redemption as a loving husband, which is too bad, because Julia is a very likeable heroine.
