If you haven’t read the books of Joshua Harris, I suggest you try going through some.
The books I’ve read so far…
I Kissed Dating Goodbye – He talked about being single
Boy Meets Girl – He shared his story on how he met his God’s Best and godly wisdom for dating couples
Not Even a Hint – He talked about the sin of lust
Here’s his site listing his other books – http://www.joshharris.com/books.php