It Ruins Me (Betrayal) by Penelope Sky is a dark and intense journey into the complexities of love interwoven with betrayal and the harsh realities of vengeance. This novel, part of the broader "Betrayal" series, is a standout piece that captures the reader's interest from the beginning and provides a thrilling ride through its well-crafted narrative and deeply flawed characters.

The story revolves around the turbulent relationship between two central characters, Balto and Cassini, whose love is constantly tested against a backdrop of criminal underworld activities and fierce personal demons. Penelope Sky effectively uses a dual point-of-view narrative, allowing readers to delve deep into the characters' thoughts and emotions, enhancing the connection between the readers and the characters, and providing a multi-dimensional view of the storyline.

The pacing of the book is particularly noteworthy. Sky manages to maintain a brisk pace throughout, with a balanced mix of dialogue and description that aids in building a vivid setting without slowing down the unfolding events. The suspense is well utilized, keeping the readers on edge with numerous twists that are both surprising and plausible, cultivating a sense of anticipation and unpredictability.

One of the book’s strengths lies in its character development. Balto, the male protagonist, is portrayed as a complex character enveloped in a hard exterior but battling with internal conflicts and vulnerabilities. His love for Cassini is both his salvation and his curse, pushing him to extremes, which makes him a compelling character who is both formidable yet sympathetically human. Cassini, on the other hand, is not just a damsel in distress but a strong, resilient woman who navigates through her fears and uncertainties about her love and the costs associated with it. Her evolution throughout the story provides a rich layer of character progression that is gratifying and realistic.

The themes of betrayal and trust are explored with an intense emotional depth. Penelope Sky does not shy away from exposing the raw and sometimes ugly sides of love and human desire. The conflicts between the characters are not just external but deeply entrenched in their pasts and insecurities, making their interactions more dynamic and emotionally charged. This exploration elevates the novel from a mere thriller to a profound examination of the human condition.

The novel also excels in its sensual depictions without overstepping into gratuitous territory. The romantic scenes between Balto and Cassini are eloquently written, balancing sensuality with emotion, thereby enhancing their overall impact. These moments are not only about physical connection but also pivotal in showcasing their emotional vulnerabilities and the shifts in their relationship dynamics.

Moreover, the setting of the novel, the shady and perilous world of the mafia, is depicted authentically. Sky’s detailed knowledge about the workings of organized crime and its impact on individuals trapped within its realm adds a layer of authenticity and urgency to the narrative. The secondary characters also add depth to the story, from loyal allies to formidable foes, each adding a piece to the intricate puzzle that Balto and Cassini need to solve.

However, the novel is not without minor flaws. At times, the inner monologues can seem slightly repetitive, particularly when characters dwell on dilemmas that they have explored in earlier sections. Although these moments are crucial for understanding their motivations, they occasionally slow down the momentum of the narrative.

In conclusion, It Ruins Me (Betrayal) by Penelope Sky is a gripping blend of romance and suspense, set against a backdrop rich in danger and deceit. With its intricate plot, robust characterizations, and heartfelt exploration of dark themes, it stands as a compelling read in the romance thriller genre. Sky deftly manages to weave a tale that not only entertains but also provokes thought about the nature of love, trust, and redemption. Whether you are a fan of romance novels or thrillers, this book promises a captivating experience that will linger long after the last page is turned.