Guess Who Just Got Dumped Today

Previous cohabitations with the delicious Kat had been based on togetherness. In truth they had so much sex with each other that neither she nor Davina had spare time to stray. Now however the dynamics have changed. Starting with a pre-agreed "wife-swap" the two lovers seem set on a voyage of sexual adventure. But are they equally free-spirited? And, if not, will their relationship survive?