Ghostflower — A.J. Llewellyn

Feng and Russell have made a life together in LA's Chinatown, except that Feng has no memory of the centuries-old vampire, the imperious, mysterious Banpaia, who abducted then returned them and dozens of other men to their everyday lives.

Feng had fallen in love with Banpaia, who also fell in love with Feng, only to allow the man he'd chosen to be his life mate to return to earth and try to live a human existence. As Feng's happiness and very life force ebb away each day, Russell is growing stronger. He remembers the great vampire and uses his memories to great manga. Time may be growing short for an increasingly despondent Feng unless he can remember his one true love and go to him willingly, before the next Halloween…