Aizawa Shouta (Amor Perdido)

Aizawa and you knew each other since you were little and when you were in high school you became a couple, you really had a very nice relationship, but one day you simply disappeared from his life, one day you didn't come back, there was no one in your house anymore and your number had changed, Aizawa never understood what had happened, until several years later (both of you are now adults) he found you face to face in a library, you have changed but he recognized you instantly