We Two by Ann Brady Clay

'they lived in a world all their own... a world without men.'

From the back:

The Inner Circle

Valerie... a wildly passionate female in search of the physical fulfillment no man, including her husband, had ever been able to provide.

Andrea... a sophisticated career woman who knowingly exposed and cruelly exploited Valerie's weakness in the most humiliating manner possible.

Mal... a square and chunky creature with a shaggy haircut and mannish ways and a penchant for spanking pretty girls who defied her surly dominance.

Lisa... a lovely-limbed redhead who eagerly became something more than a best friend the moment Valerie confessed her secret need and strange cravings.