The composite Moon in the twelfth house requires the two of you to do a great deal of work that most couples are unwilling to do.
With this house position of the Moon, the greatest danger is emotional dishonesty at the very least and sometimes open and outright dishonesty.
The need here is for both of you to plunge into the relationship, find out the truth of what is going on, and face it squarely and honestly.
If you don't seek out the truth, your relationship will give you the feeling that you have been defeated in life by forces you don't understand. And when the repressed feelings finally do emerge, they will explode destructively. If, however, these feelings gradually emerge from an honest search for understanding, the wisdom you gain will make you much wiser than people who haven't had to face such a challenge.