I hate the term friends with benefits. I also preferred just a basic, bread and butter relationship. You know someone you are turning to for sex regularly? It doesn't have to be monogamous. So when I hear women saying this to me on dates or for the first time, I always ask them what the difference is, why avoid the language? Also, why set limits over time, sex or feelings? It seems like trying to dive into a pool and only being willing to get half-wet when its phrased like this.