hey mate. The thing with fwb relationships is they're not meant to last, and you don't want to have one with a girl that you're gonna be upset about not seeing anymore after the relationship ran its course. In this case what I recommend is you go to
www.livestrong.com there's some good articles on there about fixing friendship/relationships and how to move on if the friendship can't be fixed. Another thing I recommend is if you're gonna look for future fwb relationships go to
www.badboylifestyle.com and read his article on fwb relationships.
Hope that helps good luck!!