When I saw the clue that is the first thing that came to mind. "Rebecca" is a classic and was a classic movie as well. (Even RS would know it) The new love is haunted by the old love. She believes that her husband adored his first wife and could never love her in the same way. Already Melissa is feeling "insecure" about Jason's feelings. Perhaps when Deanna comes back to "haunt" her she can't get past that Jason was in love with her. I really think Melissa either turns him down, or is too afraid to come to the FRC. It takes a lot of convincing -
at the end of Rebecca, Mr. DeWinter finally tells his new wife that he hated his first wife - and finally Melissa accepts his proposal.
Now if someone can relate that to KMoon as well?
