Non-violence is the greatest Dharma; So too is all righteous violence.
When people come at you with their worst, you should come at them with your best (advice given to Selena Gomez by her mother, quoted in Time magazine.)
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
Service to mankind is service to God.
Similarly, humans have misunderstandings and arguments which can be cleared and once done, we are good. Misunderstandings and arguments are part of life. None of us is a saint, everyone has their own viewpoint and looking at things differently. We are not clones of each other, so why do we expect everyone else to behave the way we do.
We must accept people for who they are, and not tamper with their personalities. Learn to be cautious around people who break your trust over and over again. Also, know that ties are not necessarily strong even between people where there is trust. People change, they react differently under different circumstances.
"A love affair with knowledge will never end in heartbreak" - Michael Garrett Marino