It sounds like you’re looking for a story based on a specific phrase, but the wording seems like a mix of search terms rather than a clear title or premise.
Here is an overview of the "Bodyguard Romance" trope, which focuses on the tension and dynamics between a protector and the person they are sworn to keep safe.
Professional Friction: Initial conflict arises from the protectee’s loss of freedom or the bodyguard’s rigid professionalism.
The Slow Burn: Because the bodyguard is literally paid not to fall in love, every look or accidental touch carries extra weight. This "forbidden" element is what keeps readers clicking "next chapter."