question?

Frank Landers tells him a depressing story about erectile disfunction and how he doesn't think he's fit for his wife anymore. Apparently, the main character agrees. Keep in mind that by this point he's already proven himself to be a bastard (killed six ninjas on his way to prove that he was a ninja, showed no remorse about it. I think his death toll is worse than all of the "bad guys" combined.)

After this, with no talk between Frank Landers and his wife, the wife inexplicably zombie shambles into the main character's room while he's reading a book, as if to say "Hey, let's do it..." and the main character, bastard that he is, betrays a man who saved his life in Nam and sleeps with his wife.