Throughout the seasons, Rainbow Dash was hinted to feel this way towards Pinkie Pie. She’s fun when Rainbow Dash is in the mood, but can be a nuisance. They seem more distant while her relationships with Fluttershy and Applejack are growing. Also, I can portray her as I wish, because I’ve got some pretty solid examples from the official material.
 
Also, I wish this to remain separate from the “idiotic debate” series it started. It doesn’t have exactly the same intentions.