Any girl needs people to admire her beauty, look at her like a bitch, use her charms. But to snore next to her or to beat a muffin is an insult to her womanhood. So she fell for a negro with a huge phallus. First, to get back at her boyfriend for disrespecting her, and second, to let the other guy have his way with her pussy. You think they're sorry for spreading their legs? Ha, girls need variety - and boredom makes them old. Youth is the most important thing for them!
Watching your wife suck other people's dicks is a buzz kill. And she understands that by licking other people's testicles, her husband's boner will get sharper. So these swinger couples swap to sharpen their senses, bring back the novelty, and make their orgasms brighter. Only I would make the lighting not so bright, then there would be more understatement and less embarrassment.
Porn with meaning is more interesting than regular porn. Dizzy glasses for virtual sex, I'd like those. And the girlfriends are beautiful and experienced. The gambler even sweats through those glasses.