they had an instictive ability to love, so that when they encountered each other, they fitted together in a way that made the two of them more than each could ever be on their own
"They had an instinctive ability to love," highlighting a natural connection between the characters. When they met, this bond allowed them to complement each other perfectly. Their union was greater than the sum of their individual selves, enhancing their strengths and filling in each other's gaps.
This deep, inherent love created a powerful and harmonious relationship that transformed both of them. Their connection was so strong that it seemed to elevate them beyond what they could have achieved alone, emphasizing the transformative power of genuine love.