The one who is near to your heart sometimes hurt u more.when heart-break that pain is unbearable. The best way to tackle this issue is don’t make too much attachments with friends/family members.
Even though if your mistake is not their don’t hesitate to say sorry because sorry is very powerful word which melt other person instantly and I am sure this will fix the issue. If sorry doesn’t work then hug him/her. if still it doesn’t work i think better to stay away from that person. if he is really your best friend then sure it will work, believe me.
If your down to earth say sorry and feel the difference . uanoop