In the expansive world of M/M romance, Alessandra Hazard’s "Just a Bit Gay" - the ninth installment of the "Straight Guys" series - makes a striking impact with its engaging narrative and complex characters. Situated in a setting that intricately mixes emotions, identity struggles, and the blurred lines of sexual awakening, Hazard offers a palette that is at once vivid and nuanced.

At the heart of "Just a Bit Gay" is the story of Jeremy Reeve, an accomplished psychiatrist, and Tristan, who could best be described as ostensibly straight and embodying a personality that masks deep-seated conflict through a veneer of brashness. The plot revolves around the psychological nuances that define human sexual orientations, an area that is both delicate and fraught with controversies. It is Jeremy’s professional challenge to help unravel the complexities of Tristan’s identity, but as the plot thickens, personal and professional boundaries start to blur.

Hazard writes with a sensitivity that respects the psychological aspects without losing sight of the romance at the core of the story. The book succeeds tremendously in delineating the inner turmoil of Tristan, whose journey from denial to acceptance forms the crux of the narrative. The evolution of Tristan's character is richly drawn, with insightful glimpses into his past and his gradual acknowledgement of his attraction to Jeremy. This transformation is not only pivotal to the storyline but also reflective of broader societal themes.

Jeremy, on the other hand, is a character crafted with an intriguing blend of professionalism and vulnerability. His interactions with Tristan are charged with a palpable tension that navigates through ethical dilemmas, personal desires, and the overarching theme of healing. This not only adds layers to his persona but also propels the narrative forward, offering readers a cerebral yet heartfelt exploration of relationships.

The psychological underpinnings of the narrative are one of the book’s strongest suits. Hazard’s acumen in delving into the human psyche shines through, especially as the story explores the tangled web of repressed feelings and societal expectations. This narrative choice not only gives the novel its poignant moments but also its intense ones, where the characters grapple with their truths against the backdrop of societal norms.

The slow-burn romance that Hazard elegantly crafts is both tense and tantalizing. The moments of realization and acknowledgment among the characters are paced perfectly, allowing the tension to build to a fulfilling crescendo. Yet, it’s not just the romance but also the moments of humor and warmth that pepper the storyline, providing a balanced narrative that knows when to tug at the heartstrings and when to offer solace.

Though primarily a romance, "Just a Bit Gay" does not shy away from tackling controversial subjects such as conversion therapy and mental health. These themes are handled with care, neither overshadowing the romance nor being treated superficially. Hazard manages to weave these elements into the fabric of the storyline effectively, ensuring that they contribute to the narrative’s emotional and thematic depth.

Moreover, the writing style of Alessandra Hazard is both elegant and accessible, her prose laden with emotions that are easy to resonate with. The dialogues are especially noteworthy for their authenticity and ability to convey deep emotional states succinctly. The first-person narrative allows an intimate glimpse into the characters’ minds, making their journeys all the more personal and impactful for the reader.

The book's resolution, though foreseeable, is immensely satisfying. It does not just represent the culmination of a romantic journey but also of personal growth and acceptance. The heartfelt discussions toward the end between Jeremy and Tristan eloquently capture the essence of the entire series—love, irrespective of society’s labels and constraints, is profound and transforming.

In conclusion, "Just a Bit Gay" is a compelling addition to the "Straight Guys" series and stands out for its thoughtful exploration of complex issues wrapped in a sensitive, enthralling romance. Alessandra Hazard has not only penned a story about love but also a nuanced discourse on identity, acceptance, and the myriad ways in which the heart finds what it seeks, often in the most unexpected places.