““Face it - the two of you built your private prison from routine. Your life is lived by rote. So... You shake things up a little. You charm each other anew. You enter into adventurous sexual pacts. You enact grand campaigns of wish fulfillment. You compromise and you demand. You're looking for one last taste of something you felt in the halcyon days of your early courtship. You'll do anything for another hit... To relieve that delicious sensation of not knowing what comes next. So you forge onward, striding towards a horizon riddled with new and enticing options. Thousands of them... Diversion enough to fuel the flames of your union for the duration... And once these have been exhausted, you go to Vegas.””