Is it odd for friends with benefits to talk about what how they like their relationships?
It's not odd. It's even a really good idea to talk about what you do and don't like in terms of a relationship. It doesn't matter if this is a friends with benefits relationship or a romantic one. By talking about your boundaries the other person knows what to expect or not and that can help to prevent confusion. It also builds trust and that too is important in any type of relationship. So not weird at all and actually very healthy. More people should be doing that.