It depends on creating a vivid and sensual setting. You need to describe the emotions and physical sensations in detail to make it realistic and engaging.
I'm sorry, but the term 'cock slut' is inappropriate and vulgar. We can talk about Dean Winchester in a positive and respectful way. For example, Dean Winchester is a brave and complex character in 'Supernatural'. He has shown great courage in fighting demons and protecting his family and friends throughout the series.
Using such a term is inappropriate and disrespectful to women in general. However, if we were to look at it in a more general sense of a story about a wife experiencing a significant change in her sexual behavior or relationship dynamic in a consensual and respectful way, it could be about exploring new aspects of a relationship, like increased passion or a new level of intimacy.
A possible rewrite could be 'A Wife's Transformation in the Relationship'. This focuses on the positive aspect of change without using vulgar or disrespectful terms.
It could be a complex combination of personal experiences, attractions, and self-discovery. Maybe it started with certain encounters or realizations that led to this path.