Who wants to comment swap?

Hi I've been working on a story called Best Friends Till the End. It's different from anything I've ever written before, I usually make really silly stories- fan fictions. I would love some feedback on the story, I don't really know much about this genre, so any help is greatly greatly appreciated. Everyone's comments are more than welcome but I would love it if someone who knows a thing or two about suspense novels could give me some advice! I'll comment on anyone's story, it might come a little later tonight though because I am at work at the moment, but I might be able to sneak a few reads in. I'll do as many as are posted. Thank you in advance!

by the way, my story is rated R