My fiance & I are not the very reglious type. We both grew up in church and I'm a preacher's daughter. After we got engaged we decided we needed to get back in church. Both sets of our parents are either preacher's,women directors or youth ministers. They all told us to watch Fireproof and we did. After watching it I decided even though we weren't married I wanted to do the 40 day challenge. I got the book from my future mother in law & it has helped our relationship so much. We have grown closer & stronger. Now that we're in church & I've been doing the 40 day challenege the devil has been attacking us more but all in all we're stronger. I know the book/40 day challenge is for married couples but I would recommend anyone to read this because it truly does help *even if you're not having problems in your relationship*