We are to deal with such a person with patience and kindness.  We do not know the person’s mental state or what trials he or she may be going through at the time. Rather than dwelling on our own hurt feelings, we, as Christians, are to let go of negative feelings and move forward in peace and forgiveness. Sometimes events that at first seem devastating actually are allowed by God to develop our characters and increase our faith. 

Romans 12:10-21 gives us good advice on the love Christians should have for each other as well as for those of a worldly disposition. “Be devoted to one another in brotherly love. Honor one another above yourselves. . . . Bless those who persecute you; bless and do not curse. Rejoice with those who rejoice; mourn with those who mourn. Live in harmony with one another. . . . Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everybody. If it is possible, as far as it depends on you, live in peace with everyone. . . Do not be overcome by evil, but overcome evil with good.”