I've just released my newest novella Twins at Once. 
The short description:

Sabrina was never one to have a strong fantasy to fulfill. Then she gets picked up by Sam at a boring insurance conference. And then she discovers he has a twin. Much to her delight she finds the brothers are exactly what she needs in her sex life. The difficult part is figuring out where Sam’s twin’s wife fits into the picture. 

 As always I prefer Smashwords because they give author's a bigger slice of the pie:

Twins at Once at Smashwords.

But there is also Amazon's Kindle: KDP Twins at Once

And Barnes & Noble's Nook : Nook's Twins at Once