An Embrace of Citrus & Snow by Rowan Amaris

Bo
Bo’s made a career out of debunking the supernatural. His eager fans regularly tune in to discover what he’ll disprove next. And Bo really should know better than to let them pick where he goes.
It’s supposed to be a routine visit to a so-called haunted house. But instead of dust and rats, Bo finds Everil: A strange, beautiful man who faints into his arms.
Which, fine. Weirder things have happened. Except the man claims to be a kelpie. And Bo’s soulbond. (Which explains why Bo can taste him, snowmelt and frozen grass, from across the room.)
Bo should just walk away. Believing in magic has only ever hurt him. But he’s always been too stubborn to take the easy route.

Everil
Everil’s spent a century hiding from the Faerie realm and his abusive former soulbond. Now the man is back, and Faerie law makes his claim on Everil’s soul inescapable.
Which means Everil absolutely cannot give his soul to the brash, kind human who barges into his home. Unfortunately, his soul isn’t keen on listening to him.
Everil’s ex will kill Bo if he finds him. To keep the human safe, Everil must break their bond. Only Bo rejects Everil’s every attempt to protect him, offering rough reassurance in turn.
A proper fae would insist. But Everil’s always failed at being proper. And Bo’s honey-sweet soul and wonder are impossible to resist. Despite the perils of homicidal dryads and duplicitous friends, Everil agrees to run. With Bo. Not from him.
Everil is determined to protect his new soulbond. But he soon finds that the true risk comes with the lingering taste of Bo’s kiss.