IT WAS A RELATIONSHIP BORN OF CONVENIENCE. Neither of them were actually that into one another, but Mina has a hard time with people and Reid is impossible to get unless a girl (or boy) wants to pursue him aggressively. After Mina decided she wasn't into it they just... stopped. Which probably was pretty soon after prom? (URSULA WILL NEED TO ASK MINA FOR THE PHOTOGRAPHIC EVIDENCE OF REID'S HUMANITY.)