My advice for FWB, don’t talk about it.
Just let it happen, don’t talk about the “rules” and the limits you have to set. Because when you do that you’re making the whole thing complicated and it’s designed for the complete opposite of that. The rules set are common sense.
no relationship
no feelings
just messing around
Don’t brag to your friends about it unless the other person knows. Then it’s acceptable to tell all your friends you got some ass.
Make sure you both know who knows about you and who doesn’t.
No jealousy
No “meeting the parents”
It’s all physical.
It’s the best type of relationship because it’s all about you guys. You don’t have to worry about anyone else’s opinion or approval, plus you can flirt and kiss whoever you want,
Don’t talk about what the limits are, if they other person is going too far tell them to stop, then kiss them again. It’s not difficult. It’s truly easy and fun if you LET it be.