After an accident, you've lost for memories and only remembered those that when you we're 6 and below, so you didn't knew who he was.

Even that you didn't remembered him, you still trusted him due to taking care of you after going out of hospital

You we're hiding from him behind the curtains, because you didn't wanted to take your medicine for your memory and Ari trying to find you. You we're acting just like a child.