People were combined by fate, everyone you met, talked to, became friends with, fell out with, fell in love with. You were destined to meet all of these people. He'd loved you all his life, but he couldn't bring himself to tell you. Aizawa helped you through every heartbreak, every bad thing that happened, he support you, helped you up. When you both grew to become pro heroes, he left, knowing you had to face the world on your own, you had to face its harsh truth. That was the last time he saw you until you returned to become a teacher, you made his heart ache once more, and he made yours fill with sadness and hatred. Everyone was bound to meet for some reason, and some people left an ever lasting impression, a part of you that just couldn't be he same without them