These are two very strong people, and as a relationship they can make a strong pairing. Bottom line, they each look for the same things in life. In other words, what they need is to feel secure. In different ways, of course. Scorpio is a water sign and water, in astrology, stands for emotion, deep feelings. A nature that is almost volcanic in its depth. In the natural world, for example, the Scorpio can be likened to an iceberg, where the water is frozen into something that's deep and you don't see everything at the beginning. You just see the surface. You see what the Scorpio wants to let you in on.
But Capricorn can see into a Scorpio and can provide what the Scorpio needs, which is essentially security. This is also what Capricorn looks for: security, an ordered life, something that is stable and countable on. Capricorn is an Earth sign. Earth, in astrology, stands for stability and for a life that is lead to create something that lasts. Capricorn is the sign of success, of achievement, of being a person that gravitates toward authority and power. And therein maybe something that they need to work out. To begin with, of course, there's lots of deeply felt passion between the two. Both are very sexy signs and are able to make love in a way that gives to the other a sense of completion. But when I say that Capricorn is the sign of taking on authority, Scorpio is the sign of taking on control. And so, you have the two that have to work out in which way they're going to control or be domineering or be authoritative because they have that nature. Each of them has that in their nature. The happy part is that they can work this out because they make each other feel safe. So, essentially it is a wonderful pairing sexually and as a deeper relationship it can bloom into something very stable and very loyal.