Some books, most often Christian fiction and Sci-fi, contain landslides of exposition in dialogue so that readers can figure things out along with the main character. Giving exposition in dialogue is not a bad approach in small doses, but when it's in a deluge, it comes across very ham-fisted, and this is what happened with this book. So, while parts of this novel were hot and intriguing, especially the first scene--woo, steamy--it got tangled up and stifled by the explanations of how BDSM works. All the dos and don'ts, expectations, blah, blah, blah, just kept coming and coming. That killed a lot of the chemistry and momentum within the work. Like, when Lana shows up after her wedding and interrupts the lovely action going on, I got annoyed. Telling from Marcus right then instead could have been really sexy, but she comes in and it jammed the zapping scene and the connection building between Julia and Marcus. This interruption occurred only to give an education to Julia and the apparently clueless reader, who has no access to Wikipedia.
I also expected more internal struggle from Julia to come to terms. Her conflict was more about ending up with a domineering man and going against her feminist sensibilities rather than any kind of trust issues or shock or leeriness over activities, as most people not yet in touch with their submissiveness or engaged in BDSM would be. You'd figure she'd have more questions in that regard. With This Collar is fun and delicious in spots, and I enjoyed the tension in the end, it just doesn't rank high on my list of You Must Reads!!! because in a lot of places it comes across like a manual. And what makes it feel like that is a lot of the dialogue just didn't seem realistic. With the two women for instance, it's like Lana and Julia aren't truly friends, you can't feel history or connection there. It's supposed to ring true, but it doesn't. What kind of friend doesn't tell their close friend beforehand that the wedding is a collaring ceremony? That's weird and nonsensical, an obvious plot device that would never happen in real life.
If you have absolutely no clue about BDSM, at all, you might enjoy the talky sections more than me and the full reading experience as intended. Overall, I am left with mix feelings. I think this could have been a sensational book with a less obvious aim to educate the audience.