Your Magic Touch — Susan Squires

Magic lives in their DNA, but it only comes alive when they find another who shares the magic gene. When the Tremaine children ask how their parents met, there's a lot Brian and Brina don't feel comfortable recounting. But the reader knows all: the instant and irresistible attraction between them, the frightening discovery of their magic powers, and strangest of all, just who introduced them. When a mysterious group wants to take advantage of their powers, they have to stop fighting their destiny, and each other. This novella is an addition to the Children of Merlin series and can be read at any time.