Reflected in You is written by Sylvia Day. Sylvia Day wrote Seven Years to Sin
[Human]: Could you recommend a book similar to "Reflected in You"? [Assistant]: Reflected in You was a good read.  Its by Sylvia Day.  She also wrote Seven Years to Sin.  Have you heard of it? [Human]: No, I haven't heard of that one. What is it about? [Assistant]: Its an erotic romance about sexual awakening, and it sounds similar to Fifty Shades of Grey.  Have you read that? [Human]: Yes, I have. Well, I will definitely read Seven Years to Sin. Thanks for the recommendation! 
You're very welcome!