Neither of them had sex before, each for reasons of their own. Mary Anne was raised in a strict conservative Christian household, discouraged from even causally hanging out with boys. When her rebellious sister got pregnant, they kicked her out and forbade her from seeking pleasure in order to concentrate on her studies.
Colin was also under abstinence, but religion wasn't his only reason. For years, he spent his time fawning over Nintendo's space bounty huntress Samus Aran: Reader insert fanfictions, a collection with the entire Metroid series, even a Zero Suit Samus body pillow. He had spent his days longing for a woman that didn't even exist.
But here and now, the two realized that what they had missed out on for so long. It was a burning heat like nothing ever before... it felt amazing, thrilling, making them not want to stop as Colin thrusted harder and harder, gushing cum and making Mary Anne's nipples extremely hard. Mary Anne's lustful moans reached a fever pitch as she passionately kissed the manly beast on top of her.
The old couple looked on: despite the fact the two already climaxed and were still going was surprising, but they left to attend to the other reluctant couple. They had no idea what so much arousal was caused by, because one week earlier....
***********
Mary Anne found herself in a horrific situation: lip locked with a bimbo. She struggled free, smashing the bimbo's skull in with a nearby candlestick. She was in a church retrieving bibles when a homeless man bimbofied right in front of her and attacked. She grabbed some heated water the hobo was using and began rinsing her mouth out.
She paused for ten minutes, and when nothing happened, she walked away...
***********
Back in the present, the newly weds were experiencing the virus first hand. Their hair grew long and full, Colin's staying black while Mary Anne's turned bright blonde. Colin's waist cruched inward as his hips widened to match Mary's, their asses inflated in sync and Colin's member drew in and vanished completely.
The transforming victims both moaned feminine moans as they rubbed their clits together, their new 40 DD tits squished together, their plump, sexy lips mashed together as the transformation completed.
Colin and Mary Anne were gone: Cailin and Mari giggled as they kissed.
The two bimbos' afterglow and giggle filled grope fest was cut short with two shotgun blasts, and the bodies were drug out. This woul require answers....
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Game Over: Did you really expect somebody raised like Mary Anne to suddenly be all in on sex?