Unless other factors in the charts are more agreeable, Sagittarius will resent the control, and restriction by Scorpio of her need to explore the world, and Scorpio will become broody, suspicious, and jealous, of what Sagitarrius might be doing while out of his sight.
The answer to this will be Communication - which requires Air Signs - and the Will to communicate.
However, there are other factors below.=======================================================THE PARTNERSHIP : SYNASTRYThe art of comparing 2 Birth Charts to see what the relationship is like is called "Synastry".
You will see that, although the Sun Sign is important for individuals, it is often less important than other factors in relationships - especially earlier in life, when the biological urge is to reproduce. Like anything else in Astrology, Synastry has its limits in that human consciousness and Free Will can override any factor.
One technique is to compare the Mars position of one with the Venus position of another.
Mars shows how we get what we need, and Venus shows what we need.
I am Sun Gemini, my wife of 25 years had Moon in Gemini.
Generally, people are drawn together in partnership to learn from one another and produce something that is the fruit of the relationship, which could relate to children or other joint venture.OVERVIEWIt is important to realise that when we are born we relate more to our Moon Sign than Sun Sign, the change-over tends to occur in our 30s.So if the Sun Sign Lessons are not compatible, relationships will tend to not last beyond this time.However, if people share the same Spiritual goal, they are more likely to stay together.It helps to be clear about what you are trying to achieve.