Your two moon signs are 135 degrees apart in a Quincunx angle.
One of you may feel like you are constantly working to please the other, this may be the sign of a relationship that is out of balance so take extra care to watch out for this. An imbalance could be created, however even if you can overcome this , there is only a little compatibility between these two Moon signs
Your Moon signs indicate that you have conflicting desires. Cancer is typically a Moon sign of insecurity, emotional and sensitivity and intuition. Sagittarius is a Moon sign of cheerful, non-chalance and with little acceptance of committment. Together the two of you may have difficulty finding aspects of yourselves that are similar, and this could cause resentment and intolerance in the relationship.