In the Season 3 premiere, Belle's book is a success but she worries about having enough material for a follow-up tome. Belle's sister Jackie shows up on her doorstep needing a place to stay after leaving her unfaithful husband.
Belle tries to broaden Jackie's sexual horizons by taking her to a fetish club, with surprising results. Blocked in trying to write another book, Belle seeks support from her editor, Duncan.
The sexual attraction between Belle and Duncan heats up over a late-night chat session, while Jackie wants her sister to accept that she and Ben are now a couple, and Bambi ignores Belle's warnings and falls for a handsome client.
Belle provides sage counsel to Ben regarding his failing relationship with Jackie, and to Bambi over her romance with her client, Byron - but she promptly ignores her own rules with Duncan.
Belle investigates the other side of the bed by hiring a male escort and experiencing the client point of view, but feels guilty about "cheating" on Duncan - whom she does not realize employed Bambi's services earlier in the evening.
In the Season 3 finale, the secret tryst between Duncan and Bambi is revealed at the latter's wedding, leaving Belle heartbroken but providing fodder for her new book's final chapter. Ben reveals his true feelings at the eleventh hour.
Belle deals with a new business proposition, an uninvited house guest, a challenging client and the all-important question hanging over her head: should she commit to best friend Ben?
Belle struggles after the reality of being a girlfriend, a chaperon and a high-class escort hit home, and when she meets Ben's mother there is an even bigger shock in store for her.
Belle's ability to separate work from pleasure is tested when she meets an alluring and dangerous new client. Meanwhile, Poppy's curiosity gets the better of her.
Belle tries to help Poppy come to terms with the recent revelations, but Poppy has other ideas. A cruel trick by dominatrix Charlotte leaves Belle holding the 'baby'.
Belle arrives home from New York to a nasty shock that leaves her in a fighting mood, so she unleashes the closet wrestler in a client and confronts dominatrix Charlotte. Relations with Ben hit a new low.
Belle throws herself into a vampire role play, but the appointment comes to a sticky end. Belle and Ben are still frosty with each other, while the predatory Harry and minx-like Poppy are still on the scene.
Belle finds herself in turmoil after Ben asks her to give up her job. She finds her life further complicated with Harry being around and one of her clients who looks familiar.