I don't read or write erotica, but I'm an open-minded girl. I need more character, more storyline, more...just MORE than a book filled with just sex sex sex can give me. But most books I read have some romance and/or sex in them. And for the most part, I think sex in books is good. When sex moves the story along, builds up a character, tears down a character, makes a character stronger or vulnerable or reflective or empowered? Great. Part of the story? Awesome. But sex for sex's sake, with zero storyline, with two vapid characters being stupid....... 
 I hated Natalie. 
 She was an idiot. Childish even. Characters are interesting by the interactions they have with the other characters around them. She had none. Just her moronic inner monologue. "I love him! I'm scared of him. Can I do this? This is GREAT!" Also? A pretty ridiculous romance book stereotype. Rich heiress, redhead, large-breasted, sex-crazed yet a virgin, and only ever attracted to one man ever, and gives up everything she worked for to be with that one man who changes her life. I'm aware these books aren't exactly supposed to be teaching anyone anything, but god, could that be a worse lesson for women? 
 I hated Sevestyan. 
 a) His little soliloquy at the end where he reveals how he got into the BDSM scene was...well, disturbing. It translated as him not even really being into it at all, but one time he saw a prostitute getting off on it and he wanted to be the guy to make some girl feel like that. 
 b) He was just a little too much on the side of obsessive and psychopathic. Bipolar. Traumatized took on a new meaning. Perhaps some counseling? 
 c) His reaction to his brother didn't make sense. At all. 
 d) Guys who lock girls up in apartments and buy them things but never let them leave but keep them for sex at night are not sexy. It's creepy and gross. 
 I hated the rushed conclusion. See? See how perfect everything is? They have sex all the time and are rich and happy and NOW HE EVEN TALKS! 
 The most interesting part was the Russian mobster stuff that came up in this book exactly twice. Kind of. 
 I had to finish the 3rd part since I had already invested the time in the first 2. But I will not read the next installments. I'm sure since these did well (sadly), there will be the other brother's series. SKIP IT!