The premise of Claimed by the Alphas was fun - humans share borders with were-creatures, and a small town has a lottery to decide which women gets sacrificed to be a bride to the wolves in order to get the pack's protection against other were-creatures who have been harassing the area.
The winner of the lottery (SHIRLEY JACKSON'S [b:The Lottery|6219656|The Lottery (Tale Blazers American Literature)|Shirley Jackson|https://d.gr-assets.com/books/1348757577s/6219656.jpg|15161007]!!!*) is a nineteen-year-old girl. The main character finds out what the whole lottery is about, thinks, "Hot werewolf guys???" and volunteers to be taken in place of the girl.
*I never thought I'd be able to make that reference.
From there, the story starts sounding an awful lot like [b:Falling for the Alphas: Part One|22119643|Falling for the Alphas Part One (Fallen #1)|Cassie Wright|https://d.gr-assets.com/books/1400290614s/22119643.jpg|41464815].
The werewolves need to breed with humans, because they can't have children with other werewolves. The pack that Mila gets sent to has two Alphas, one who lived as a human for seventeen years before deciding he couldn't stand hiding his inner wolf anymore, and the other is more wolf than man.
The pack doesn't welcome Mila warmly, because now that they've got a human, the two Alphas will end up fighting each other to the death for her, which will leave the pack weak against an attack from those other were-creatures that have been hanging around.
So the obvious answer is, the Alphas have to share her, so that the pack will remain strong, and the Alphas won't have to kill each other, which is good because they're like brothers.
Both this and Falling for the Alphas end with the woman having sex with the more wolf-like Alpha, despite the fact that the more wolf Alpha is initially uninterested in the flabby human.Werewolf Romance Rule Count:
Rule #1 - Werewolf babies solve everything.
Rule #2 - Mating with two Alpha wolves always works out perfectly.
Rule #2.5 - In cases where there are two Alpha males, one is always more human, the other is always more wolf.
Rule #3 - Werewolves desire women with curves, because female werewolves are all lean and muscular.
Rule #4 - Werewolves cannot breed with other werewolves.
Rule #5 - It's rutting season.