They technically already got the matching rings in ch9, Tooru bought one for Hori as a birthday gift (weird thing, but okaay) and when Miyamura tried it on before Tooru giving one to her it got stuck on Miyamura finger... only the certificate is on its way.re-reading this...its not that they look like married couple, he spends soo much time at here place that really the only thing missing is the rings and marriage certificate