Taurus and Capricorn make a very strong pairing. Both of them are earth signs, and in astrology earth stands for the search for stability. So each of them needs structure and order and a sense they are living lives that count for something. They have that in common.
Of course, sexually they have a great deal in common, because both are deeply and intensely sexual as well as sensual. Taurus can be a little more romantic and Capricorn a little more earthy, but together they do find this deep bond both in bed and out.
Once they run into the next stage of their relationship, there is going to be some kind of issue over control. Both love to control, and both need to have control over their own environment. Capricorn is extremely strong, and Taurus is extremely stubborn. So we keep running into that butting of heads or coming up against each other.
Still, what they get from each other is so important to each of them that sense of stability and loyalty and devotion to each other, and that they are leading lives that account for something, that they can overcome this. They can make a very strong marriage.