The Duchess of Chittenden — Heather Mar-Gerrison

This is the first in a new historical romance collection and introduces us to the Duchess of Chittenden - Lady Emilia.
Emilia is trapped in a loveless marriage to Isaac Wolseley, the Duke of Chittenden.
His guilty secret is that he is in love with his best friend and confidante, Levi and he married Emilia simply as a smoke-screen.
Emilia dreams of a life with another Wolseley man - Cousin Teddy, who she has only met once, very briefly, but has carried a torch for ever since...
When Isaac makes a decision to release them all from their current intolerable situation, he inadvertently sets off a catalogue of events that changes all of their lives forever.