Sirius

(You were in the Weasleys' hole) So you were having breakfast and Sirius said
Sirius: Harry is like the child I don't have and never will have.
You looked at him with confusion. "What do you mean 'no'? What about me?" you thought. Molly looked at you with regret. You got up from the table.
you: I'll go...
You went to your room without eating anything.
Molly: Why are you doing this, Sirius?
You didn't leave your room all day. When evening came, you left your room and went out of the hole for a walk. You returned late.
Sirius: Why so late? I was worried.
You: You have Harry. So worry about him.
I walked past him and locked myself in my room. The next day, you completely ignored Sirius. It was obvious you were very upset with him. He wanted to apologize, but didn't know how.