Your two moon signs are very close together in Semi-sextile relationship (30deg) .
There is only a slight chance that you may get along, especially if one of you is willing to be more tolerant of the other. You may share some common understanding. However your Moon signs indicate that you have very different dreams and desires.
Sagittarius is typically a Moon sign of friendliness, freedom and enthusiasm, whereas Capricorn on the other hand is a Moon sign of caution, reserve and hard work. In this relationship each of your Moons are very different. This could be a hard relationship to make work unless you are both committed to working at the relationship very hard.