I've never done this before, it's kind of odd. Correct me if I'm wrong guys, but this is how I came to my conclusion: text conversation: me: uh, do you wanna have sex tonight? her: uhm, really? me: yeah, just for fun her: mmm maybeee me: alright, sounds good her: we shall see ------------ <6 hours later. now night time, i get a text> her: not tonite. me: okay no worries, i'll see you later this week her: ok that's pretty much a fuck buddy/friends with benefits, right? we were fucking over the summer, almost started dating, but it didn't happen. i spent the night at her house many times, got introduced to her family, etc. as she put it, we shall see.