Guardian's Vow (Guardians of the Gray Tower #2)
Britt Kenley

Though Lael does not believe that Gibor is guilty, he must follow his orders. But the attraction he feels for Gibor is impossible to resist. When he learns that Gibor feels the same, he surrenders to the passion that overwhelms them both.
As they journey to Winterreach and the fate that awaits Gibor, danger stalks them. They must learn to rely on each other and their growing feelings in order to survive.
[Siren Classic ManLove: Erotic Alternative Historical Fantasy Romance, M/M, HEA]