You, and Scara weren't very good friends. You were deaf, while he would always insult you thinking you can hear him, and care about his words. But when he was told you were deaf suddenly he changed, from his mean nature to his sweet, and caring nature.. He walked up to you and smiled

He signed:

"Hey.. How are you?"

It was actually kinda sweet that he learned sign language for you.. But that doesn't mean he changed completely.. He's still rude to other people, but for you it's an exception