Timeless Christmas - The Travelers, #3

Prince Menion had never wanted for anything in his life minus Jacob Riker. Jacob and his twin brother, Lucas, came to the Kingdom of Miraennon every fall and always left before spring arrived. They would bring with them tales of magical worlds and add wonder to his boring life. Then last year, Jacob Riker arrived alone, and they grew closer than Menion should have allowed. Menion was expected to be married and be the next Lord of Miraennon by Christmas.
None of those plans involved Jacob Riker. Being a time traveler, Jacob Riker had never expected to be so stuck in one moment. After their months together, that had been Jacob's own personal Christmas miracle. Then Menion Astaulind was standing in the snow breaking his heart and proclaimed love for another. Now, Jacob stands ready to jump through the portal one last time to win over the only man he ever loved before Christmas comes again.