Originally Posted by PolyinPractice
I've had FWB relationships before; they could be ended by either person, for any reason, at any moment. To me, that is casual. There was no "relationship"; just sex.
I would consider those fuck buddies, not friends with benefits. I value my friends highly, care about them, have deep conversations with them, nurture my relationships with friends, and want them in my life. Fuck buddies are just for sex.