I spent some time reading on the history of remarriage in the east, not nearly enough to be an expert. It seems that the idea of remarriage was not universal in the church and only crept in during the 9-10th century right before the schism.


Besides we have to follow our own tradition, and the indissolubly of marriage is certainly affirmed in the west for all its existence. I really don't see any theological reasons for the Orthodox practice, especially how arbitrary the limit of remarriages has been set. It seems more like an invention by man, to avoid suffering for the faith.