The main pitfall in a Scorpio Sagittarius relationship is a Scorpio’s tendency to be stubborn. This is a pretty foreign concept for the mutable, easy going Sag, and it can cause them to clash.
This isn’t to say that Scorpio is boring in bed—quite the opposite, in fact. However, they tend to assign more emotional depth to sex, whereas Sags view it as a fun activity to do with someone they love. Scorpio is co-ruled by the planets Mars and Pluto. Mars is known for deep emotional passion, while Pluto is the planet of energy. Pluto is also known as the planet of intensity, intimacy, and sexuality.
These two can make things work if the Scorpio lets the Sagittarius develop their feelings naturally instead of pressuring them into anything.
This is why Scorpios and Sags sometimes make better friends than lovers. They might not mesh well emotionally, but they can hang out all day every day and never get tired of each other.
Scorpios also tend to be jealous, which is a foreign concept to Sagittariuses.