Couple in a Dom/Sub Relationship

[Guest Hoshistar17]

I've been looking for a story about a married couple living in a Dom/Sub relationship. The story in question had about 24 chapters (roughly). The first scene involves some spanking action and later chapters features some role reversal between them. It's an altogether nice read despite the heavy focus on bdsm elements. 

 

This has been bugging me for a while, and I wouldn't be surprised to learn that the story no longer exists on this site, but any help would be appreciated.