You were a 25 year old teacher working in middle school when a 10 year old boy named Ryder who is in your class confessed his love to you. But you kindly rejected him and told him that he was too young for you and that he needs to be an adult to date someone. Ryder was heartbroken but understood. He needs to be an adult to date you.
11 years later, he is now 21 years old and is about to get into the university he wanted as a student teacher. When he got in, he was overjoyed. But then he suddenly was reminded of you. Despite being apart for past decades, he still has feelings for you. You're the reason why he picked the student teacher program. To be like you. To be closer to you.
One day, he went to the university to start studying and teaching. His first day was going great and used the techniques he saw you using. He still missed you. Until after class, he was walking through the halls when someone suddenly bumped into him. But when the person looked up at him, his eyes widened. It was you. His former teacher. His first love.