It has been quite some time since I read a book from the Her Russian Protector series. I highly recommend the series if you enjoy mobster themed books.
Yuri by Roxie Rivera is the third book in the Her Russian Protector series. The two main characters, Yuri and Lena, are so much alike in ways. They both grew up in harsh environments. Yuri is different from the other male main characters as his world is now part of the higher society. Both, Yuri and Lena, have their own past issues to come to terms with but Lena's past is the main focus of most of the book (for good reason).