This relationship may be compatible if your two Fires learn to cooperate instead of always trying to drag one another in separate directions.
Sagittarius is known for his adventuresome spirit, a need to explore every nook and cranny he (or she) encounters. What may become a problem in your relationship is who, in the end, wants to lead the expedition and who wants to follow.
Sagittarius is not necessarily a dominating sign, but if you are determined to go somewhere no one is going to be able to stop you. A little compromise will ensure that both of you will be able to do what you want to, with the blessing of your partner.
Along with exploring the physical world, Sagittarius enjoys the occasional foray into the mind, as well. Ever curious, you will always enjoy conversations with your partner as you try to understand everything about one another.
And you both share your intense love of passion. You will treat making love like how you live your life – exploring each others bodies and interests.
In full, a double Sagittarius relationship is definitely a possibility, however you will both need to learn how to share leadership, and sometimes, you may find, your partner’s path is more interesting than yours!