This can be a very good combination or a very bad one. This is about as intense a combination as you will ever find. It works well with common goals and objectives but when the fire is lit you best keep an eye on it because it may get out of control. Scorpio is dominant by nature, but Scorpio will have trouble keeping their Sagittarian partner under control. This freedom loving sign will surly bring out the worst in Scorpios nature.
Mutual distrust is easy here.
The Scorpion possessiveness will make life unbearable for Sagittarius. It is true that from the sexual standpoint, Scorpio is attractive to the Sagittarian lust, but thats where the compatibility ends. Not a recommended combination. Live and learn is about the best thing to expect here. Both can bring out some of the other's better qualities but the chance of anything long lasting is remote.