The Englor Affair. Sci - Regency, #2

Anxious to escape the confines of Regelence society, if only for a little while, Prince Payton Townsend poses as an admiral's aide to further investigate a dangerous conspiracy. Payton plans only to use his computer skills to help navigate the tangled web of mystery and deceit on planet Englor, then return home, but he finds himself drawn to the charismatic Colonel Simon Hollister. Simon, however, is no mere soldier-he is heir to the throne of Englor, and his life is meticulously planned to include a bride and heir.
Unlike Regelence, the Regency society on Englor disapproves of same-sex relationships, and Payton and Simon's attraction plays out in a daring secret affair, one Simon never expected would grow into love. Risking scandal and certain ruin if they are discovered, Payton and Simon uncover more about a common enemy and a deadly plot that imperils both their worlds. But in this game of interplanetary intrigue, love might be the ultimate casualty..