Do you establish it BEFORE you do anything, like a business agreement? Or do you wait until AFTER it's happened and say "yeah, I don't want a relationship, but let's keep doing that"? The only "FWB" relationship I've ever had was basically us hooking up once a week or so. We weren't seeing other people, but we weren't dating, either. She'd come over, we'd watch a movie, drink, eat, bang, repeat. After a few months, she dropped a "so what is going on with us?" question. I made up some excuse about "oh i don't have time for a relationship right now" (translation: I don't like you like that), and we ended it after she wanted goodbye sex This same process repeated (with the same girl) 2 years later, except it only lasted for 2 weeks. She eventually emailed me with a "I guess I'll never be the kind of person to spark your interest.." type of email and we haven't talked in a while. She's good in bed but for whatever reason I don't feel the "spark" with her. Part of me wants to go back to FWB with her, but the good, moral part of me doesn't want to use her because she's one of the sweetest people I've ever met and I don't want to hurt her. It kind of sucks that I don't feel the spark with her, cuz I know she'd be a trustworthy gf and a good wife. Holy shit this post got too long. Let's discuss proper FWB procedures.