If reconciliation with God is such a complicated matter (only because we make it complicated), then the same event with other fallen people like ourselves must be thorny indeed!
One side must admit fault and seek the reconciliation but for this to be anything else than a partial peacemaking, the other side must then accept the request for forgiveness and admit his or her own trespass. It is nearly impossible that only one side is at fault, though it may even be that one side was purely the aggressor. A great struggle still may be in living out this newfound peace after the reconciliation. People, unstable as they are, are terrible likely to have another misunderstanding, and another “falling out” between the two is always possible.
And yet, here we are, called to seek peace and pursue it.
“Pursue peace with everyone, and the holiness without which no one will see the Lord” (Hebrews 12:14 NRSV).