The Jealous Groom by Alexa Riley is the third installment in her Groom series, a collection known for its ultra-romantic and swift-moving plots that delve into the timeless theme of possessive love. Alexa Riley, renowned for crafting quick and intense romance stories, does not disappoint with this latest entry. The novel is a blend of passion, a smidgen of jealousy, and a fortress of emotions guarding the path to true love.

The Jealous Groom invites its readers into the life of Grant Lancaster, a man who is depicted to embody strength, possessiveness, and an overwhelming sense of protectiveness towards his love interest, Harlow Nicks. Harlow, on her part, is not just a damsel in distress but a character with depth, wit, and her sense of independence. Her acceptance and reciprocation of Grant's feelings and intentions form the crux of their relationship dynamics.

The novel opens with Grant coming to terms with his overpowering feelings for Harlow. His jealousy is almost a character of its own, wrenching uncontrollable reactions from him that are both endearing and, at times, suffocating. As the narrative progresses, Harlow’s acknowledgment of her own desires and her concessions to share her life and space with Grant take center stage. The dialogue-heavy style of Riley's writing effortlessly conveys the escalating tension and undeniable chemistry between the protagonists.

A significant aspect of Riley's storytelling is her ability to create a cocoon-like world where the external conflicts are minimal, thereby focusing intently on the internal dilemmas of her characters. The dialogues in The Jealous Groom are crisp and laden with emotions, which vividly paint the struggles and the consequential growth of the characters. Grant's character arc from a possessive lover to one who learns to trust and respect Harlow's choices is commendable and well-executed.

Riley’s flair for crafting steamy romantic scenes is apparent in the ways she handles intimate moments between Grant and Harlow. These scenes are abundant and vivid, written with a rawness that is typical of Riley’s books. They not only add to the sensual tension but also deepen the readers’ understanding of the characters’ emotional vulnerabilities and their mutual dependence. While the passion is palpable, it is Grant's emotional journey towards overcoming his overpowering jealousy that adds a unique flavor to their relationship.

However, The Jealous Groom is not without its drawbacks. Readers looking for a complex plot or intricate subplot might find the narrative somewhat linear. The focus remains strictly on the relationship dynamics, with little room for external plot development. Moreover, Grant’s over-the-top possessiveness, although central to the storyline, might not resonate well with readers who prefer a more balanced portrayal of romantic interests. Yet, for those who relish an intense alpha male character and a swiftly moving plot, this book might just hit the right notes.

The writing style is straightforward and effective, designed to keep readers turning the pages. Alexa Riley proves yet again why she is a powerhouse in writing condensed romantic fiction that packs a punch. The pacing is fast, making it an easy read for a lazy afternoon or a quiet evening.

In conclusion, The Jealous Groom is a typical Alexa Riley fare with all the trademarks of an OTT (over-the-top) romance—passion, jealousy, a touch of drama, and a guaranteed happily-ever-after. It is a fitting continuation of the Groom series and will satisfy readers who have been following Grant and Harlow's story through the previous books. It’s a recommendable book for anyone who enjoys unapologetically fervent romances with a hefty dose of male possessiveness, neatly wrapped in a story that’s as sweet as it is steamy.

Therefore, for fans of the genre, The Jealous Groom delivers everything it promises—intensity, emotion, and a romance that defies the odds. It's another testament to Alexa Riley's ability to craft engaging, if somewhat formulaic, love stories that speak directly to the romantic’s heart.