I did a marathon with Friends With Benefits
It's called When Love Begins Casually. You guys can check it out on my blog.
http://mrbrownsmoviemarathons.blogspot.com/2016/02/when-relationships-begin-casually.html
As much as I liked No Strings Attached, I think this one nailed the character development and realism of the situation better. That movie was entertaining and had an attractive cast behind it like this one but this one really fleshed out the couples relationship much better and is just more hilarious mostly due to Woody Harrelsons performance.