One popular one is 'Fifty Shades of Grey'. The male lead, Christian Grey, can be seen as an alpha male. He is dominant and in control, while Anastasia Steele is the 'good girl' who enters into a complex relationship with him.
One popular mafia alpha male romance novel is 'Twisted Love' by Ana Huang. It has a strong alpha male character and an engaging plot filled with passion and drama.
Another great one is 'Outlander'. Jamie Fraser is a quintessential alpha male. His courage, loyalty, and his intense love for Claire are central to the story. The historical setting of the Scottish Highlands further enhances the romantic and adventurous elements of the novel.
Local libraries are also great places. They often have a section dedicated to romance novels. Librarians can be very helpful too. You can ask them if they have any popular alpha male romance novels in stock or if they can recommend some from their collection.
The good girl is usually initially intimidated by the alpha male's strong personality. But as they interact more, she discovers his softer side. This is common in contemporary romance novels. For instance, the alpha male might show his vulnerability when dealing with his past traumas, which makes the good girl feel closer to him.
The quality of free alpha romance novels varies. Just because they are free doesn't mean they lack quality. Some indie authors pour their heart and soul into their writing and offer it for free as a sample of their work. But, of course, there are also some that might have issues with grammar, plot, or character development. You really have to sift through them to find the gems.
Another notable one is 'Gone with the Wind' by Margaret Mitchell. Rhett Butler is an alpha male figure. He's a man who knows what he wants and isn't afraid to go after it. Set during the American Civil War, the tumultuous relationship between Rhett and Scarlett is a classic in historical romance.
One of the latest could be 'The Ruthless Alpha's Mate'. It features a strong alpha male who falls in love unexpectedly. The story is full of passion and the struggle between his alpha nature and his newfound love.