The implicit possibility of "leaving" is always present because doing something together in a way that is desirable for everyone requires an agreement/meeting o

The implicit possibility of "leaving" is always present because doing something together in a way that is desirable for everyone requires an agreement/meeting of minds/consciousnesses, and without it interaction is not possible, and without any interaction there is effectively no relationship. Since people and organizations are always changing, there is no guarantee that there will be any such agreement and thus any relationship in the future (whether it is of an intimate or professional nature).