I'm more into horror, supernatural, twisted, duality themed books, so, I don't really have any suggestions for titles. But! I am pretty good at finding new shit to read!
Goodreads.com
That's my fav website. When I'm craving a particular theme or element in a story, I type it in there and boom! Lists!
Example: Fight Club by Chuck Palahniuk
There's the "readers of this also enjoyed" list off to the right hand side. There's "more books by this author" just down below it. Then my fav, the one I lose myself to for hours, "Lists with this book" lists!
Sometimes they get really specific about different elements of the story. Just type in the last book you liked that you read and that you wanna read more books like.
Then you can use Amazon.com the same way, if you have an account there. I spend hours wading through the "buyers of this also liked these" lists.
Then, last but not least, my trump card:
Tv Tropes.org
If I just can't find the specific shit I'm into or a similar themed book, I go there and look through trope lists.
Fight Club(Literature) tvtropes Using Fight Club as an example again, it'll give you tropes that are featured in this book. Click on the trope for what you're craving at the moment,
Imaginary Friend, for instance, and go down to the "books" folder and look through other books that featured this trope.
That's all I got, man. Good luck!