I could find very little to like in this book; the hero (Brian) is a huge jerk, and his wife (Gillian) are both terribly annoying characters. I was rooting for Andres, the "other guy." Andres, unlike Brian, is gentle, sweet, handsome, and genuinely in love with Gillian, and while Gillian professes to love Andre back, just some simple gestures and stories from Brian is enough to make her fall out of love with him? I don't think so. The most touching scenes, and the best scenes in the book, were between Andres and Gillian, near the beginning of the story. After that, the book just falls apart.
I'm not complaining about the lack of steamy love scenes, yeah, yeah, in every romance novels, the title characters are passionately in love and wants nothing more than to get each other's clothes off, so I could care less about that. I am upset with the lack of character development.
I love the premise of the story, about the repentant rake, going back to claim his abandoned wife's heart; instead, Brian is a jerk, and he does little to redeem himself. He ignores his wife for 4 years, then gets her back when it's convenient for him, because he needs her and what she can do for him as a marriage partner, and lies about it repeatedly. After he stops lying and professes to be in love with her, he's just...really boring; I can't see what Gillian sees in him at all. Even his father, the overbearing and evil Marquess, is more interesting; for such a professed rebel, I don't think Brian had much of a backbone.
As for Gillian, she is, like previously mentioned, extremely fickle. Good god, she had Andres, who was handsome, gallant, and madly in love with him (Andres is a poor aristocrat, but then again, Brian DID bring her back to a hovel in London). Brian professes to love her, tells her a few cute war stories, and she falls madly in love with him again, and again, and again, after all the lies he's told her. I just wanted to shake some sense into her.
When I prefer the antagonists to the protagonists, to me, that's a sign of a bad book.