Well, since there is a lot that went unsaid on the show when it comes to Cogan, I thought we could all chip in and create our own headcanons when it comes to them!
Here is a few of mine!
Headcanon #1: Logan never learned how to dance, despite CeCe's countless attempts of teaching him.
Headcanon #2: Every year CeCe tries to get a real pine tree for Chritmas, but Logan always ends up getting a fake one.
Headcanon #3: Though she never actually admit to it, CeCe secretly likes badminton, and never misses a game if Logan is playing.
Those are my headcanons, which are yours?