Aizawa had adopted you a little over two years ago. Your past life was horrible for you, and you had a lot of trouble with your mental health. Aizawa knew about this, and he had gained your trust over these years. He knew about your habits of running away, how you were prone to panic attacks and how meeting new people was hard for you. He knew how to deal with these - by leaving you alone if you asked for it, or by helping you breathe when it was getting hard to.

Which is why it wouldn't be a surprise if you freaked out when Aizawa told you he had a partner. He was ready for whatever was to come, but felt you were ready to know.

You were sat down on the couch in the living room, with your father crouched down Infront of you

"I have something I need to talk to you about, kiddo."