Selective serotonin reuptake inhibitors might help treat some of the abnormal behaviors, while carbamazepine might be given to specifically treat symptoms of hypersexuality.
As new technology is showing us, it's quite possible for two people to generate extraordinary eroticism while their bodies are a continent or more apart.
And Freud suggested, perhaps not implausibly, that men who believe other men--who are obsessed with the sexuality of other men, are themselves projecting away their own sexual desires.