The Best is Yet To Be by Kathryn Le Veque

Paris de Norville (The Wolfe) and Jemma Scott Hage (The Wolfe) find love in their sunset years… with each other?!
It seems like an impossible suggestion. Paris and Jemma first met in The Wolfe, in a fiery explosion of temper and taunting – her temper mostly because he was taunting. Handsome and arrogant in his youth, Paris was a powerful knight, second in command to the great William de Wolfe, and found great sport in taunting a Scots captive named Jemma Scott.
Pretty, green-eyed Jemma was the oil to his water. The fire to his ice. Perhaps the sparks that flew between them at first were those of attraction, but soon another knight had Jemma’s attention and Paris was relegated to a role of both friend and tormenter. He affectionately called her ‘banshee’ and what she called him is not fit for delicate ears.
It was a like/hate relationship for the ages.
The years passed and Paris married Jemma’s cousin, Caladora. They had a wonderful marriage but sickness took Caladora from him and Jemma lost her beloved husband, Kieran.
Missing Kieran, and missing Caladora, now it is Paris and Jemma again in their twilight years as the sparks that flew between them so long ago are rekindled.