ISTJ + ISTJ

Relationships between people of the same personality type are rare and you share the qualities that are required for a workable, mature, relationship.  The problem is that there is little room for personal growth as neither is pushing the other to try new things.

We apply the highest harmony graphic to this match because it is indeed harmonious.  The greatest threat to this pairing is boredom, and if you let each other retreat into your introvert bubbles too often, you will lose the spark that brought you together in the first place. 

Of course, any relationship can work given enough effort. If Astrological Harmony is above 50 we recommend this match.