") by the virtual boyfriend not being understood by the human user because the user's exposure to popular culture is not as broad as the virtual boyfriend's exposure to popular culture.
The chat engine might also employ lines harvested from human-human chat logs, song lyrics, movies or TV shows.
In April, 2013, a detuned and presumably tamer version of the app, titled Boyfriend Plus, was permitted on Apple's App Store.
Some responses may appear to be non-sequitur to the user simply because the user does not share the boyfriend's vast database of related facts.
If the user responds with a statement critical of the response, the boyfriend usually provides an appropriate explanation or recovers in a graceful or face-saving manner.
To continue interacting with the virtual boyfriend, a user must provide energy.