All the Stars in Montana by Debra Salonen

She’s the first woman to tempt him to lower his carefully constructed walls... Aspiring screenwriter Jade McCall looks at every temp job as inspiration for her next screenplay. Her latest boss, nicknamed the “Realtor to the Stars,” is sit-com gold: handsome, rich, charismatic and intensely brooding. But it’s his intelligence, dry humor and thoughtfulness that reels her in deeper than she’s ever been. Mega-successful real estate broker Zachary Masters revels in his prestigious reputation—and why not? He wrote his own story, and hides the truth of his past behind the glamorous facade of his success. Jade intrigues him from the start, and soon he’s tempted to take their agreed upon fling to the next level. But then Jade’s career takes off, sending her home to Montana. He thinks he’s lost her for good, but the consequences of their brief affair create an unexpected second act. Zach never thought he’d have a shot at a real family until Jade returns with a secret of her own.