In some ways, I think Kaede would in an adult circumstance be the sensible one. Like if they were adults she would be in a situationship with Moko and Moko wants to hook up, but because Kaede has feelings she feels an emotional disconnect with the physical aspects of the relationship, so she sets boundaries for her self. Since they're not adults they're explicitly dating, but it's the same emotional issue without the skills and communication to navigate it.
Meanwhile, Moko is all, "I want to see her and touch her constantly and I mark her as mine so others know to stay away, but what is 'love'", like girl, come on.