Hmmm, I wonder how that fnck buddy thing works. My friend Chris had it, and it seemed to work fine for him. But, I tried it with one girl, and she totally agreed that that's what it should be, and then she got attached, and when I ended it she freaked at me and said I made her feel unloveable. And then I talked about doing it with a different friend, and she said it would ruin our friendship, and then I kinda fell for her, and it took a while to redistance that. So, that's really only two attempts, but each was pretty much a failure. So, not quite sure how people pull it off.
Plus, from an external perspective, I'd be a little uncomfortable dating someone, knowing they have some casual ongoing thing setup. Clearly they shouldn't be going at it while we date, but will they?