Does anyone have some smelling salts? Because I'm perilously close to fainting from too much fangirling. 
 Oh, dear Lord this was such an amazing read! I almost didn't read this because To Taste Temptation, the first book in the series, frustrated me so much it was all I could do not to throw my Kindle across the room. But this... God, this just makes me want to do a victory dance. Needless to say, To Seduce a Sinner is a keeper. 
 Let me fangirl about Jasper first. 
 I absolutely loved him to bits! He was such an amusing person and played the part of the rakish wastrel very well. His wittiness also elevated brightened up the book and made the slow start very bearable for me. And I'm not usually drawn to such a character, with my preference for stoic and reserved men, but he was so sweet, caring and cute that I found myself falling for him early on in the book. He didn't have a nasty bone in his body, and I love, love, love him for it! 
 While I loved Jasper immediately, I can't say the same for Melisande. Yes, I understood her intentions and I believe they justified her actions in the story, but she takes some time to warm up to. I found her a bit too snarky at the beginning, especially when she was bent on protecting her heart from Jasper, but she became more and more likeable as the story progressed. At around 75% of the book, I was thoroughly enchanted by her strength of will and honesty. I liked how she didn't mince her words around Jasper--how she spoke her mind. She was fierce when the situation warranted it, but she can also be kind and caring. 
 The secondary romance between Sally, Melisande's lady's maid, and Mr. Pynch, Jasper's valet, was very cute and entertaining. I absolutely giggled whenever they flirted. 
 The sex scenes were great, but weren't as hot as those found in her other books, like The Raven Prince and The Leopard Prince. And while I'm not a big fan of BDSM, I was surprised to see myself unperturbed by the subtle sadomasochist undertones in the scenes. Note that they're very subtle, like a slight power play between the participants and a scene where Melisande was tied to the bed. Take my word for it that they didn't give me the creepers at all. In fact, they actually seemed natural and damn exciting. Good job, Ms. Hoyt. 
 I do have a few issues with the story, though. 
 But first, I have to make it clear that there's no doubt in my mind that Melisande and Jasper were meant to be together. I think they complemented each other well; Melisande would reign in Jasper's penchant for tomfoolery, while Jasper would bring laughter to Melisande's otherwise serious life. My issue lies in the way Ms. Hoyt handled Jasper's attraction to his new wife. On one second, he barely noticed her, and then--BAM--he's in lust with her. It was just too sudden, too unnatural. I also thought that the angst was a tad bit overplayed in the story, making Jasper seem a little overdramatic at times. 
 Despite its flaws, this is still a really enjoyable book. I would definitely read it again in the future. And I'm very excited for the next one in the series; Alistair and Helen were built up nicely here and I'm curious to witness their love story.