What happens in Heaven when we come into contact with fellow Christians who don't wish to speak to us in this life? Let say for one reason or another, we have friends whom we've drifted apart from in our lives, and they also happen to be Christians. We're all going to meet each other in Heaven, but does the Bible say anything about our unresolved tensions and how we'll see each other from then on?
This is in the realm of speculation, but for sure any Christian in heaven has already been sanctified completely so assuming that we and our friends "make it to the end" and enter heaven, there will be so much goodwill and catching up and learning of why we drifted apart on earth but then immediately forgive each other then focus our attention to have eternal great fellowship while enjoying the presence of God that all causes for drifting apart on earth would have vanished into insignificance.

C.S. Lewis's The Great Divorce, study guide here, has imaginative scenarios of this kind of meeting, including meeting a murderer who has repented.