Pony Play (Sealed with a Kink Series, Book Three) by Sean Michael

Jack’s life is typical—typical barely-there boyfriend, typical shitty job, typical tiny apartment in the city. But when Jack is dropped off at Wellbrooke Pony Farm in the middle of nowhere, his life goes from typical to interesting in two seconds flat. A handsome groom named Daniel teaches Jack that it’s okay to want more, to be cared for, and that sometimes, a city boy just needs to be stabled.