It is a hard place to be. When someone wrongs you, betrays you, slanders you, hurts you, back stabs you, the list goes on & on, it flat out hurts. Its hurts even more when that person is in a looked up to position, a friend, or a family member, and when someone admitingly wrongs you & simply tells you, they'd do it again & do the same behavior to others as well. OUCH!
Naturally this can cause some frustration to rise up at minimum. However Proverbs 12:16 states "A fool is quick-tempered, but a wise person stays calm when insulted." I believe in Gods word 110% even the things that sting & are hard to walk out. So if someone wrongs you, if you'd like to be the wise person, stay calm. I promise the fool will be known very quickly by their quick temper which is typically accompanied by arrogance.