At the Duke's Pleasure by Tracy Anne Warren

I'll admit that I liked the drama and angst of Claire. Yes, she did come across as a bit immature and crazy, but I give her a pass since she's a fictional character in a romance novel and they're kinda funny when they're crazy. Ned was a great hero, strong and determined and puts up with a lot from the heroine so you could see them together and happy for a long time. he can take a lot and since her excuse for the craziness is unrequited love, then I guess the craziness ends when she's finally certain her loves her. I was really expecting the heroine to have some deep dark secret of some reason other than unrequited love for not wanting to marry, but nope, that's what it was. The ending of the book is a bit absurd, but that whole spy subplot is a minor part of the story.