When my sons were small, they often argued and fought. Their disagreements erupted for any number of reasons, and sometimes, the best strategy seemed to be to separate them for a period of time. When it appeared that they had learned a lesson and could once again play well, I let them get together again.
You would expect that the mean one would want to reconnect and reconcile sooner than the hurt one. But that was not the pattern; there was no pattern. Both boys always wanted to get back together and play after approximately the same amount of time had passed. . . .