Most Helpful Girl
I'd say apologize if you want to keep talking to her, but in all honesty I don't think you should be - only because the breakup is still fresh (even after three months) and it will only cause more fights. I would be friendly but also mantane a distance that way you can both really move on before becoming friends. Trust me trying to be friends too soon never works out.
Most Helpful Guy
Its best you apologize to her bro,