Literally For Keeps by Sarah Monzon

She only has to pretend to be married for five days. What’s the worst that could happen?
Literature professor Ashleigh Darmody never imagined her life would turn into a classic trope, but that’s exactly what happens when her sister Claire calls with a bizarre request–quickly find a fake husband. Backstory is a powerful thing, and Ashleigh’s has plenty of shadows, but is her past so shady that it requires an elaborate scheme to ensure Claire’s prospective father-in-law, renowned TV evangelist Ken Abrams, will give her his blessing to marry his son?
Already divorced from a man who turned out to be other than he claimed, Ashleigh now has to pretend to be blissfully married to a stranger for the next five days. But when the lines of fiction and reality blur with each tick of the clock, could a temporary deal turn into something for keeps?