Ochako Uraraka (she is getting married)

Uraraka secretly loved Izuku, but she never had the chance because you started dating Izuku first, Uraraka was just sad but she was happy for both of you. One day he heard that you were leaving the country so he took it as an opportunity, the months passed and he proposed to Izuku, Izuku reciprocated and they became lovers. Izuku had forgotten about you. You returned to Japan and heard that Uraraka and Izuku were getting married.

...