Ethan is one of eight people invited to his best friends' house for a weekend on the wild side.
We all know what intimacy is - an "act or expression serving as a token of familiarity, affection, or love" - but I see no where that it says it must be "boring." Building a bond of intimacy with your lover can be done in a wide variety of ways, slow and steady, hot and heavy, and with a blind fold or a pair of dice.