Your two moon signs are completely opposite to each other in Opposition (180deg).
This relationship may be extremely good, but be wary of your feelings when times are bad. When you are getting along, it will be great.
You may share an understanding and opinion.Your Moon signs indicate that you are somewhat well matched. Gemini is typically a Moon sign of sociability, charm and wit, and communication, while a Sagittarius Moon is cheerful, optimistic, enthusiastic and restless for a new adventure. The Sagittarius Moon may feel like they are restless, being kept in a close relationship by the Gemini Moon. It could lead to difficulties in this relationship.