Lish, D: Desired

The One-Handed Reads Series is made to do exactly what you might think!
¿¿Gemma was happily and faithfully married until fate pushed her first love back into her life.
It should have stopped after one night, but the temptation for more was just too much. When her husband finds out about the affair she expected him to be hurt, betrayed, and that she would have to choose.
When it turns him on instead, suddenly she's given another option. Her lover and her husband. Suddenly she's never felt so desired.