Carver of Hearts by Lilo Quie

For Carver, being a mustang means a certain degree of freedom. Horses rarely mate, instead choosing a life of polyamory, where all the stallions care for the young and omegas, a society where love is free and open. They say it takes a village to raise a child, but every mustang knows it takes a band to raise a colt. When Carver shows up on their doorstep nursing off a single-souled mare, knock-kneed and weak. Their alpha, Bran Thornbriar knows just what to do, and Carver never knows a day without love, until the season of estrus comes. When spring ravages the Band, no alpha will touch Carver, so he seeks his love elsewhere. And elsewhere may have been right into the hands of the smexiest stallion he’s ever met, and of all the luck, he’s a unicorn.
Helios Eventide Moondust, Hell for short, firstborn alpha son of Morningsong of the Moon’s clan hasn’t been welcome in a blessing since he was fifteen, his horn snapped because he wasn’t interested in females. And what’s worse, the only two things unicorns tolerate less than being gay are omegas and strange colors, the impure that are to be sacrificed to the fae upon sight. So when Carver Thornbriar saunters his way into Hell’s bar, a beautiful mare with the blackest coat he’s ever seen, it’s love at first sight, and fate has wonderful things in store for the Thornbriar Band.