Never Been to Me (MM) (2012)

Persephone "Percy" Sinclair has always lived a principled and disciplined life--with one exception. She's in love with a married man. Despite her professional accomplishments and achievements, she can't help herself. She's had a crush on Brad Shelton since high school. When Brad finally dumps her to rekindle things with his wife, Percy gathers her shattered pride, dusts off her old dreams, and moves to Paris, France.
Percy reconnects with Nick Betancourt, a former college classmate who's playing saxophone at Bricktop's Jazz Club in Paris. Reluctantly, Percy begins to date the free-spirited Nick, and is slowly seduced by his charm. What begins as a carefree adventure through the French countryside with no past, no future, and no designs on permanence or longevity, turns into something much deeper.
The couple gets married in Monte Carlo. Once home, Percy settles into the role of Mrs. Nick Betancourt and deems herself fulfilled, content, and happy--until Brad shows up at their front door one day.
Brad tells Percy he has left his wife and it was her he loved all along. Nick walks in on the scene and is shocked when his wife decides to accompany Brad to the airport. He tells her that if she goes, he will not be there when she comes back.
The decision is Percy's. Does she return to the life with her former lover, who is finally offering marriage, or does she remain with her husband and see where their newfound love leads?