Write a letter to yours with whom you had quarrel recently. Suggest that you should both forget all about that and meet over a cup of tea at your place.
My Dear Varun,
I regret very much for the quarrel which took place between us. We have been such good friends all these years. I feel ashamed when I think of the petty matter over which we quarreled. It was just a difference of opinion which created misunderstanding. We should not sacrifice our long standing friendship. Let us forget all about that ugly incident.
I would be glad if you can come this evening to have a cup of tea with me. I am sure you will not disappoint me.