Prism

Dax and Clay are happy. The sex is great. They've been in a committed, fulfilling relationship for years and see no need to change anything. Until they realize they've become a little too comfortable. They've fallen into a rut and need something to nudge them out of it.

And then tall, raven-haired, exotic Sidney stumbles back into their lives. Fresh out of a painful divorce, she needs some comfort and excitement. When she seeks out her two best college buddies, she gets far more than she bargained for. They all do.