Who is wrong here?

Anonymous
My brother and I got into a big fight. He claimed he would spend more time with me but went off with his buddies instead. Then he promised me he'd spend time with me when he got home, and when he got home he went in his room and ignored everyone for 2 hours. I called him out on his lie and then we went to sleep. The next morning he was telling me harsh things because he "didn't lie he was just exhausted" and even went as far as to say I understand why your ex boyfriend left you I'd leave you too. But he did lie.. Even if it was accidental. He claims he didn't lie followed by so many personal attacks... I need advice please.
Who is wrong here?
1 Opinion