I totally didn't realize that Class Rep's first name was Miyako, though to be fair, most people in the school setting call her 'Class Rep' or her last name 'Yatsuhashi'.
I have this ongoing feeling that Reika sees friendship and dating as being close to if not essentially the same. Since she seems to want to be either the only girl Miyako is "seeing" or at the very least her primary/best girl. These two are truly a fun couple and Reika's habit of boiling most things down to the lewd zone is always entertaining to see. But like I said the moment these two hold hands it will be both epic and I think Reika will have a full on gay panic faint/yuri stroke.