He took Lizzy’s hand in his. She leaned into him and spoke again. “You will come back again, Miss Dashwood? I WOULD DELETE THE NEXT TWO SENTENCES, THIS IS WHERE I ASSUMED THE STORY WOULD CONTINUE: I would like to share secrets with you while the gentlemen are closeted after dinner.” Lizzy shot him her sly smile.
“Indeed, Mrs. Darcy. One day, I shall return to Pemberley.”
“Until then, Mr. Darcy and I will__________.
Something like this—and the reader knowing before hand that this is a short story—would work, IMO.