After Faking His Death, He Pursued His Wife to the Bitter End

The Male Lead Chases His Wife After Losing Her

I read a novel a while ago where the heroine confessed to the hero by performing a ballroom dance with him at her birthday party. The hero misunderstood and thought she was involved with another guy, so he suddenly disappeared. Another guy stepped in and finished the dance with her. Does anyone know what book this is?